Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f005c8877ea1ed…

MALICIOUS

PDF

41.0 KB Created: 2020-08-24 16:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7b2d18637bb0c2427a6592507891f17 SHA-1: 4acc00ec080780ecd2a53c3db3927138262ecee0 SHA-256: 39f005c8877ea1ed0451797a06c49d22eec7c691eb57771d766d9c002f28f4c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a known malicious domain, ttraff.com, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a crossword answer, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. 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.com/pify?keyword=doughnut+shape+crossword+answer In PDF document text
    • http://files.threeforksambulance.com/uploads/1/3/1/4/131453602/5428518.pdfIn PDF document text
    • http://vegefipi.littleblessingsofaloha.com/uploads/1/3/1/1/131164239/9934315.pdfIn PDF document text
    • http://files.francocastilla.com/uploads/1/3/1/8/131856491/9939604.pdfIn PDF document text
    • http://files.wiedemannconsultants.com/uploads/1/3/1/6/131637606/b3b4862.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/1/0440/1024/2198/files/bicarbonate_in_water_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3816/files/12446729881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/72567029180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/44727650388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9493/3665/files/63533933271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/savunufikivugidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7122/6534/files/w3schools_android_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/dizijefaduxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/70096367964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0421/3917/files/discord_not_detecting_voice_voicemeeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/2495473014.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 6

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_off000062b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 5392 bytes
SHA-256: 63472523ff1702093797e3ba3c8167b955d67a2d41ec6ff30508cc437aa1f2fa
font_01_sfnt_off00007517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7517 9980 bytes
SHA-256: 8f789424ec31ca407bd5c7fb9a47e2fe038002ec5e5bde29f9b6d0f74dde67e3

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