Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2f1de9732abe05…

MALICIOUS

PDF

56.6 KB Created: 2020-08-07 14:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d3a9a89abf9acdc169f72abd713f441 SHA-1: 909b86ed673b31146f44b24d7df1a32db7a719c0 SHA-256: 4c2f1de9732abe054b58bf05eba68bdca9d56d3552948eaca9898a42890cbda1
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=oceanofpdf+site+down'. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify. This suggests a campaign to drive traffic to malicious infrastructure.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.ru/pify?keyword=oceanofpdf+site+down In PDF document text
    • http://files.scienceadventureprogram.com/uploads/1/3/1/3/131380308/towaka.pdfIn PDF document text
    • http://files.northfloridacarpetcleaningsolutions.com/uploads/1/3/1/1/131164152/rutibojapozemaxa.pdfIn PDF document text
    • http://files.soflamsc.com/uploads/1/3/1/4/131453985/sukeriwinaxazixa.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/1/0429/5150/8131/files/47054347204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/zopozurikesusobuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6346/6391/files/49339756867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/trasplante_autologo_de_medula_osea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/rikeragupujiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/53780730953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2679/2100/files/58996605141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/mirapobupitofonimob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/18876400439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D4 6440 bytes
SHA-256: 3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a
font_01_sfnt_off000089c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C8 5140 bytes
SHA-256: 9cc99d821ed3c1cdb66b646fbf566f37d5b13f6fc2346e3ae156b60256a133a5
font_02_sfnt_off00009b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B72 10652 bytes
SHA-256: c34fd8188e74260355ea17ee513545056b6d91b1056f0fa35b0f8e0c9b76b1cf
font_03_sfnt_off0000c012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC012 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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