Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb65d37cca0929d…

MALICIOUS

PDF

37.4 KB Created: 2020-08-05 05:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4535130ac57c463d9d42d214fff78c38 SHA-1: d7b1c3d420011ed493dbdda5e0ea0392fe7101d4 SHA-256: 7cb65d37cca0929decc216ef14923f574827cc8a9fda561e8dc1428eda7d7659
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is https://ttraff.com/pify?keyword=jurnal+morfologi+caesalpinia+pulcherrima+pdf, which likely serves as a lure for users seeking specific PDF content. The document body itself is heavily obfuscated but contains references to the redirector and other PDF files hosted on Shopify. The ML classifier strongly indicated maliciousness, supporting the conclusion that this is a link-farming or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=jurnal+morfologi+caesalpinia+pulcherrima+pdf In PDF document text
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdfIn PDF document text
    • http://files.cairnsgolfcarts.com/uploads/1/3/1/4/131438137/pirebafapuzomu-kikuvasexito-pugirejegejuwad.pdfIn PDF document text
    • http://files.quasilocum.com/uploads/1/3/1/3/131380733/dazepip-tefifipipewesex.pdfIn PDF document text
    • http://files.janellrhiannon.com/uploads/1/3/0/8/130874110/1116388.pdfIn PDF document text
    • http://files.carrouselmuseum.net/uploads/1/3/0/8/130873783/60fa124116.pdfIn 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/1/0434/5895/3381/files/spreader_beam_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/15545221710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/fakosevodanowejumorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/sijopoxezuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/pemizafukaminajigolulapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/69423492804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3581/1231/files/zawozidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/85510853161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/judimobabiwaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/48072877376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1334/files/loruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/jofakoximoxuvezaxivid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/woxisimakuzitid.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5475 5556 bytes
SHA-256: 5c19088753413fe6ce3ef3195c81dcf4cf9a346518ac99d803266a3e33a8c625
font_01_sfnt_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 9704 bytes
SHA-256: aed76086f2bbd14992a7a5151af82acf571c1a3bbaadd701bce54947d35d1009