Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d4a9f7130f70e3…

MALICIOUS

PDF

44.7 KB Created: 2020-08-21 23:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8161df33fff2cedee212dc2589f6862e SHA-1: 4e2ac7e4df4c169ed9a5c6466c4f00ad8b312431 SHA-256: 71d4a9f7130f70e3c1450f3c270b6e57f8a3dec02b44d0819382d2fbd856bf21
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many of which point to a redirector infrastructure. The primary malicious link, 'https://ttraff.ru/pify?keyword=bug+reporting+tools+free', is identified as a malicious redirector and an SEO link farm, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure.

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=bug+reporting+tools+free In PDF document text
    • http://files.creativeclayforall.co.uk/uploads/1/3/0/8/130814106/susuzuxuwat.pdfIn PDF document text
    • http://files.automatedcablesolutions.co.uk/uploads/1/3/1/4/131407980/sisazivizika-fofonuto.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/1/0440/6591/5045/files/61703654922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/33198721164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/xeziloxobok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/14772416064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3581/1231/files/zaxapugamuzodakis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/79513841169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/pawedovibiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/yum_list_installed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2496/3990/files/consumer_reports_best_baby_car_seats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/tonirabul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0449/6803/files/14611489496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/65316443002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/76777990901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/betuvujilafibamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.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_off000071de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DE 4908 bytes
SHA-256: 95d3960d1bf59bc796577e79067f5d34d6e4dbf04008dbd98cbfc84320a495bc
font_01_sfnt_off000082a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A8 10212 bytes
SHA-256: 7cc75ffbb62d790fac156d2b7d7c33de13acc22e33e046f31c13865643285491

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