Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b99b70e7278db1…

MALICIOUS

PDF

45.2 KB Created: 2020-08-03 12:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6af15a27f8cda560d1f0cf334be60d1 SHA-1: ed2b31fb6e92d0cf3df12587af7e17f8dcc54ac7 SHA-256: d4b99b70e7278db102671732581dae3bdfe58457c8bd07f60c2677dc7d8c72ac
214 Risk Score

Malware Insights

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

The PDF file contains a lure impersonating a document signing service, likely to trick the user into clicking a malicious link. The embedded link `https://ttraff.cc/pify?keyword=pdf+audio+reader+app+for+pc` is flagged as malicious. The document body also contains this URL, reinforcing the social engineering aspect of the attack. The file also contains a large number of links to Shopify, suggesting a link farm for SEO manipulation to increase visibility of the malicious content.

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.
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • 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=pdf+audio+reader+app+for+pc In PDF document text
    • http://files.iguhep.org/uploads/1/3/0/7/130740211/9845957.pdfIn PDF document text
    • http://files.positivitymagic.com/uploads/1/3/0/7/130738603/37b64e.pdfIn PDF document text
    • http://files.airdriekarate.net/uploads/1/3/1/3/131379991/2462983.pdfIn PDF document text
    • http://files.rebeccahaubner.com.au/uploads/1/3/1/8/131871614/9068884.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/1/0432/2784/0675/files/46111129926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7849/1041/files/beretitiwofolikidid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/bafenuguxoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9121/files/6218637425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3894/files/folapojopevuwesawex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4605/1744/files/rofudemapedibuvatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/aviation_far_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/pulugefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0631/9001/files/ximifuxese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3382/0322/files/gozegab.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_off00007421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7421 4940 bytes
SHA-256: 359084ea8ff90a4f16c0b060a34f9861100dcc03e49b29d3280c1f6c4338f755
font_01_sfnt_off00008505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 10136 bytes
SHA-256: dc17612bfa0c89881b986af2181ede538f800459e2fa84e793614512394d12bd

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