Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f805216d7842a26…

MALICIOUS

PDF

36.0 KB Created: 2020-08-04 21:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12b4bd8bf23cf67fb16d3643e9c2125a SHA-1: 8c07bf9f02ac252173ddbbd346fdff6e2c5bde92 SHA-256: 2f805216d7842a26d3d496d83ca6448f73085f86e2c0a11abc5ed3204545d085
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically the URL https://ttraff.cc/pify?keyword=business+english+handbook+pdf. This indicates a phishing or scam attempt, likely to lead users to a compromised site or download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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=business+english+handbook+pdf In PDF document text
    • http://files.am-ttc.ch/uploads/1/3/1/8/131857270/lalolulamisisesezo.pdfIn PDF document text
    • http://files.qhcc.org/uploads/1/3/1/3/131380440/fe0c4009.pdfIn PDF document text
    • http://files.concretesliderules.com/uploads/1/3/0/8/130813988/fabomupa-roguxoperesu-tekezot.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/1/0428/8669/3023/files/72941912499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/82362397251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/62354160522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3195/2536/files/bruno_sre_2750_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/ucf_greek_rank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/74146781569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/16195241892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/29532053133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/fantastic_voyage_coolio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/71561021752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/nys_notary_exam_study_guide_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1285/7754/files/charged_quartz_crystal_gw2.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 5

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_off00004a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A54 5460 bytes
SHA-256: 659a3f879044725217d19114a7c419a1ddca36dc9c423c0f577a35e4e1ec86e2
font_01_sfnt_off00005ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE5 11344 bytes
SHA-256: aec400f920feb7dc99798f210e483427118625f7c1ece8d6a1210192d78147d7

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