Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25593225ea7f557…

MALICIOUS

PDF

39.5 KB Created: 2020-08-19 10:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fb1cb9757920a71eb56cfc0f6c13e8e SHA-1: 60b2e9de965fcd79b05772780be96bad03988c97 SHA-256: c25593225ea7f557e4d4183d72983bbd065a1c98da76f71f8242d7ba7ccb410d
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=bodum+electric+coffee+grinder+manual, which is likely used to lure users into clicking on a malicious link. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute malicious content through a link farm.

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.
  • 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.ru/pify?keyword=bodum+electric+coffee+grinder+manual In PDF document text
    • http://files.jjenterpriseslcd.com/uploads/1/3/1/8/131871467/fuwikunu_sufekevena_nuzofun_vabekedidadow.pdfIn PDF document text
    • http://wibop.thunderheadstudios.com/uploads/1/3/1/8/131857114/mizibiwajiki-fasujopudilo-tuxutox-fajexe.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/1/0434/4827/1014/files/zopabelikowowovepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/47642485911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/asturias_isaac_albeniz_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0917/files/85026598729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/14119058299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/aw_rp120_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/rukuwisorukusugivototi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/36612914616.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_off00005d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 5212 bytes
SHA-256: 80f2e8bb05b6a72377e65b9910b29538a095b06cbe271220b07a2a9a9247c242
font_01_sfnt_off00006f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F15 10032 bytes
SHA-256: bf3918492a4f290553e0eb2e447db03a8241dcc6dcd7190525f0d634dcc6fc5b

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