Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ca9631abc3c653…

MALICIOUS

PDF

42.7 KB Created: 2020-08-01 14:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0894fd78f031ee4fd932af4a767f175a SHA-1: e1a00d93389cdb0dfca2e2f47910d13c52dccc22 SHA-256: 35ca9631abc3c653e536e9732bec818085cd14d4413197f75982c4a585440bf5
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a social-engineering lure to install a browser extension, directing the user to a malicious redirector URL. The document body, though heavily obfuscated, contains the malicious URL. The presence of a link farm further indicates malicious intent.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=ant+video+downloader+chrome In PDF document text
    • http://files.asifthinkingmatters.com/uploads/1/3/0/7/130739232/f6af3cbea988b.pdfIn PDF document text
    • http://files.colangelowine.com/uploads/1/3/0/9/130969663/ef772e0a.pdfIn PDF document text
    • http://files.thelittleyellowbuilding.com/uploads/1/3/1/4/131453645/lapigigelujalig.pdfIn PDF document text
    • http://files.shadygrove71052.org/uploads/1/3/2/7/132740778/deb08708076d3b1.pdfIn PDF document text
    • http://files.theskinthatburns.com/uploads/1/3/1/1/131164534/f66e7e2f6bf.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/1/0430/1763/3949/files/94571393504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/92605634716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/70531196627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/bizewavabigisezajijazux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/21667185828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/35567364040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/nawabore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/83479050393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifowugebivagobawogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/21387447003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/yu-_yu_hakusho_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/45817642917.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_off000067fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FB 5140 bytes
SHA-256: a523ae7b72502f2bb2c69ddb8942d44281a7f00ac88cab37e3ead01b86f445a2
font_01_sfnt_off0000795f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795F 10576 bytes
SHA-256: ffa7de93fbba4a858db1255b5ccc045108d2210bbd7d6245769d61b7f2b66844

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