Malicious PDF — malware analysis report

Static analysis result for SHA-256 366cc760f6eb58ee…

MALICIOUS

PDF

48.7 KB Created: 2020-08-02 00:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc0a7ae81e7bcd0411d53e97347c36c3 SHA-1: 5b0379750edf8bb8c636f9bde78128910172db6d SHA-256: 366cc760f6eb58ee8bad8e487a1e35f1366dc27d9885433395258e6ca2094a66
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a malicious redirector link disguised as a lab manual, designed to lure users to a malicious site. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains the primary malicious URL and several other URLs hosted on Shopify, likely part of a link farm to improve SEO for malicious content.

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=scaling+networks+lab+manual+pdf In PDF document text
    • http://files.fairfallsportfolio.com/uploads/1/3/0/7/130776828/pevuna.pdfIn PDF document text
    • http://files.brandheroesacademy.com/uploads/1/3/1/8/131856491/14feb4d1ab3.pdfIn PDF document text
    • http://files.handson-la.com/uploads/1/3/1/8/131856041/vedukifixivenufaxi.pdfIn PDF document text
    • http://files.acexcel-edu.com/uploads/1/3/1/8/131858540/rowopajazu.pdfIn PDF document text
    • http://files.tritongymwear.com/uploads/1/3/1/4/131407802/3d85aeb9809.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/1/0433/5036/0232/files/4234408265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/brother_2270dw_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/xoredini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/reverse_array_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9812/5976/files/soundmax_integrated_digtal_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/71581859256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/4436386509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14490041284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/51017050212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/dexajepepoxupuxegawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/94191920869.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 5872 bytes
SHA-256: 6eece96488555b36252746641298f3f128625929f0c6e1b999740fcbdcbc8463
font_01_sfnt_off00008ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB4 13896 bytes
SHA-256: 62a8642a08577c0079fd9b8903fe6ba8e566c7a3ab0ccf835318c33754fb2d66

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