Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e16f20e97ede8f2…

MALICIOUS

PDF

57.1 KB Created: 2020-08-18 22:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f35d04f3772168263e93a638224fdef7 SHA-1: 55b717249b1872d5caf1778ace96ba6e0b2e1133 SHA-256: 7e16f20e97ede8f2e866f9bce42f0ee506baf452ad9e1f4665a3845050d605f1
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of an SEO link farm designed to lure users with promises of free downloads. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves social engineering via a deceptive link farm.

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.cc/pify?keyword=viewmodel+android+gradle In PDF document text
    • http://files.olsyouth.com/uploads/1/3/0/7/130775368/netitogivuza.pdfIn PDF document text
    • http://files.youthultimateprogram.org/uploads/1/3/1/1/131163533/181385.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/1/0431/0374/8260/files/kawukevevixujugarudazus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9382/7485/files/xexur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4980/3159/files/sinodelananasujodisavatuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/lawinilegejijodel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/sixemujosepemobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8188/3047/files/52656245466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/54399757608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/fopavewuzemivamawaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/lefumakamosuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0443/6390/files/sowefixavejukenezelak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/lidazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0319/8114/files/54538668535.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_off0000963d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x963D 5024 bytes
SHA-256: 4425f6b4bef72d4a6fe981bad4f5ad37138b8608cda90271c410ab3b78b890cc
font_01_sfnt_off0000a74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74D 15392 bytes
SHA-256: ae09981a83b92533ed9894a30f288815d2e7c08f03c0483ab65f14d05adc01d6

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