Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e356dcac5f1957…

MALICIOUS

PDF

42.7 KB Created: 2020-08-31 06:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c83bba047239520e8ab75dffb99444a SHA-1: 6ba8cc32904542bfc921d07cb450c1e7ca44c732 SHA-256: 46e356dcac5f19570a2a0be49cebfd790637cb7aac88e1984266d9600dac4094
254 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Yahoo Messenger update, aiming to trick users into clicking it. The document also includes a large number of links to other PDFs, likely for SEO manipulation, and hints at a password-protected archive, suggesting a multi-stage attack. The presence of a callback lure further supports a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=yahoo+messanger+with+voice In 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/1/0433/8155/5350/files/calculix_for_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/death_grips_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/neuroblastoma_review_article.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/structure_de_la_cellule_vgtale.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3beccebde3b047ee88b3fe86091f6146.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e745be_3e4f433bd4b64a14af94b0ee64dae721.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a2864dfdc6b74f54b4400425f39492dc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_78952e12e6b24859b52aeaa7d4284209.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7e08989398154764912b6592c21e8804.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/04e6f9_50c646b2bd044d3eac271948ae1bfce0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/fujurefadomasiwomabivamep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/benim_hocam_trke_ders_notlar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/23620065168.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_off00006919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 5292 bytes
SHA-256: 2af4bed2991a4024f66beb2478b5dc4ce72216e0cece60431ffb0d2baf17ab08
font_01_sfnt_off00007b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B12 10216 bytes
SHA-256: f4018a3d6275d1ab9b6e0eeb9cf2a5fb1e149cbd6e1068826137af1233bdb386

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