Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b4b85daf7ee601…

MALICIOUS

PDF

45.1 KB Created: 2020-08-05 15:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8406a5124a2b4a8fe1a4ac924bcf803 SHA-1: f1a7bd75523347301aad288c70382379a6db2d88 SHA-256: 11b4b85daf7ee6012ccfd545ef2480b24acdc246e12130bd6afdf3b6d338ada3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though obfuscated, contains a URL that appears to be part of this link farm, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=introduction+to+network+cabling+pdf In PDF document text
    • http://files.dukewesley.com/uploads/1/3/0/7/130775228/zikixufasovilun-xorigikosub.pdfIn PDF document text
    • http://files.satorifloatspa.com/uploads/1/3/0/8/130874248/3110149.pdfIn PDF document text
    • http://files.bdhhs.org/uploads/1/3/1/3/131380875/kigegabixa_gelolewofozene_dakinopu_jebogabiramapo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/jibuzevogenujisipume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/gokajunedamodazotafuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/56312636791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9479/3635/files/grizzles_vs_spurs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/48964496615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/sogito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/zetarijibexema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0560/7062/files/kokutimekexujik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1747/7019/files/sunudufiweked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/junujizijigifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8646/2620/files/liziwaguropekebodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4305/1937/files/jisolugirotuwabegelobuxa.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DC 5260 bytes
SHA-256: d703ab9c3da9e15a61da6a93543489f858ca77019c0fdb97ba76a9acdf065e5b
font_01_sfnt_off000076db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 10080 bytes
SHA-256: d835b7b03a1fb73b29e722967e8743113105bd968d92fb9c7d963b12680fce45
font_02_sfnt_off00009959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9959 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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