Malicious PDF — malware analysis report

Static analysis result for SHA-256 b778cc8904d986e9…

MALICIOUS

PDF

62.4 KB Created: 2020-08-31 02:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03d8fd4863c657b8ad2e8968140d3ec7 SHA-1: c6e634fd93b54d72e05cac53549421a5ea527133 SHA-256: b778cc8904d986e9c68d0708f43cd5c09b9c53b701fe7f80b50c58de86dba2ce
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a malicious redirector link disguised as a movie streaming page. It also features a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation or to obscure the final malicious destination. The ML classifier strongly indicated maliciousness, and the embedded URL points to a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wix?keyword=tres+veces+t%25C3%25BA+pel%25C3%25ADcula+completa+en+espa%25C3%25B1ol+latino+online+gratis+2018 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/japji_sahib_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajotoliwafugesekediriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/26996849628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7563/files/70194817552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7464/4120/files/robotica_para_nios_de_primaria.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3c460_35f9d3b5f5984b9986c69ae059f79eb3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/63d3ad_ace778ea21524c61900ba02d88e28fe5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4b68be_dfd2e50e07ab452884bf90c69092c691.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_26b58eef2d594002986b9e92037c8a4b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f3b86c16dfe740c0a94601885d5d65a7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_498797f69b75420b9030a21ffcf375ea.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a6e5e9_2b81aeb69eca46dabaa65173f719b14c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ae059d_d823e5e0fa704fb99addb2d4fa5c3449.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c59f6c0eb37742cda4586de8e5ae4a8a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f55bec_00da9d83f098442fb5f708b9299ca45e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/nagoledirutejutudozaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1836/1755/files/53718163903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/43945509382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/birevojoxujimal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/45190797921.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 6832 bytes
SHA-256: f6d8f0c111dd8b7acea4675c0ab710aee574dfbde482b739aef85f37a17f2c37
font_01_sfnt_off00007092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 6060 bytes
SHA-256: 553886228ef76fe131d7322ce41f2bc6bedec51f0c07864c2f49eca71280e4c6
font_02_sfnt_off00008574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8574 6164 bytes
SHA-256: e02074ae166afe155d47b52313ac686deb03bb52d159ac2c8cfdae454e9fd81a
font_03_sfnt_off000099e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E1 1640 bytes
SHA-256: 63975d493714adb1f25107eb990a1283182f0aa60e4c73a8f150a2674429c6f8
font_04_sfnt_off0000a224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA224 15000 bytes
SHA-256: fc5800e74a609f5e99abc2cb7605c7acac12ff73eebb6f6062cc4f2e5e8eeb34
font_05_sfnt_off0000d050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD050 16944 bytes
SHA-256: d290716bad67eabd132e65b44130f88b6588498f3c69be2686e6ab9e02495626

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