Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb53e3692e863f3…

MALICIOUS

PDF

46.5 KB Created: 2020-08-31 10:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec623234cac9a659e3dccbf3daa66bce SHA-1: 8c02478c18439fb79e999fc35c857a7c819c6f3a SHA-256: 0cb53e3692e863f352576789c9d0bce1adb678a3f7eff86921e9856c51dea4d6
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to a malicious URL, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains text suggesting a lure for a movie download. The primary malicious IOC is the redirector URL, which is likely used to host or deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wix?keyword=journey+2+the+mysterious+island+in+hindi+full+movie 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/1/0428/3593/5388/files/38901984387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/14924494986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2471/0807/files/tixiwalukolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/film_semi_terbaru_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/xevewexoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/96860702929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/vernier_caliper_measurement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/lalotekoxipizomut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/autodesk_alias_car_modeling_tutorial.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c4af2f258bdf4113a4598dbf9bbdb43a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_245672fdba8e4306a82e9bc447f12124.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/90423f_1ee417c04125407c9f6f1203587b7d89.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/savotuvanoxezavusonojageb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/leresanizadowovawidogaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/sabamogopeb.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 5428 bytes
SHA-256: 816fced3feeb9c238f59d296416bcb96c886ea322f6ed8b546367946e02bfd19
font_01_sfnt_off00007f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8D 1728 bytes
SHA-256: 0810ce0371bb48a6dbbb6c56d423a1e4bda4455f4638deeed9c91ec23a796c96
font_02_sfnt_off00008825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8825 10972 bytes
SHA-256: 5f8b00bd43b0b0a2b45e0d0b35932a4c013f3e1366150d576ac510f741b56e0b