Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c12e08545d8eea…

MALICIOUS

PDF

38.5 KB Created: 2020-08-08 19:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc5f707ab52889b7e789fc42393b311d SHA-1: fe61ecf4d8cac650819359b8dca9b75d8271c1f6 SHA-256: 85c12e08545d8eeae83151975ec307f04dd4e0668906145c6ef8076057918e82
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to appear as a magazine, but the primary link redirects to a malicious SEO link farm. This suggests a phishing or scam attempt to drive traffic to malicious infrastructure. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms the malicious intent.

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.ru/pify?keyword=revista+o+boticario+ciclo+08+2020+pdf In PDF document text
    • http://files.protectmusiceducation.org/uploads/1/3/0/9/130969655/xavige.pdfIn PDF document text
    • http://files.northbuffalopresbyterian.com/uploads/1/3/0/9/130968988/9673468.pdfIn PDF document text
    • http://files.keepcalmandkickals.com/uploads/1/3/0/7/130776449/niviz.pdfIn PDF document text
    • http://files.scenicroadsrv.com/uploads/1/3/0/7/130739892/4637125.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/1/0428/1312/8863/files/pototepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/86336105702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemopijudesukofareran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/torobudimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/nusutegikesoviju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/43120876262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/rolaxapodireto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6681/files/simekixonirene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/27546400238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/80562590818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/45788057815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/thirty_useful_unix_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/14202407689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejumilaro.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_off0000567c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567C 5824 bytes
SHA-256: 5fc7d4c4eee22a58cb0f9cc933aacfca9d099a436d0e759141819f60f87e1fba
font_01_sfnt_off00006a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A63 10020 bytes
SHA-256: 1e82e379e13c6241c1f2b8d257dcda5ca3027c5bac4ccfdffde4ba9ce4164c64

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