Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d3261457ad3c7c…

MALICIOUS

PDF

38.1 KB Created: 2020-08-18 18:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef349267687e955035c4ba9d1f239643 SHA-1: be9e35af0342a13d9a5cf072fb546e522a9aaca4 SHA-256: f8d3261457ad3c7c84b698b59059988edb5f48527205e7d695e3443d9acb890e
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=cadillacs+and+dinosaurs+game+free', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the same malicious URL, suggesting an attempt to lure users to malicious content.

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=cadillacs+and+dinosaurs+game+free In PDF document text
    • http://files.makeupbybb.com/uploads/1/3/1/3/131381712/zinomezumajiwet_xamaminiwoxesus_radan_gekero.pdfIn PDF document text
    • http://sasixo.stpeterstpeter.com/uploads/1/3/1/1/131164250/8ff1f6c2e.pdfIn PDF document text
    • http://files.owlhavenfarm.com/uploads/1/3/1/6/131637853/392446.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/1/0433/4475/6901/files/99786063147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/pokemon_go_curveball_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/rebudewilofiduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/koros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/tarabuzapexejeritilitupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/bell_bottom_movie_audio_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/74101908957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80084587067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/59352224601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/51599014549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/rokexizikafojopivogol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/nuxujadusotowevo.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_off000055b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B3 5248 bytes
SHA-256: 7c30cb087f27647d59da7fca9d4dad26c522e1d4b928212ea905edb186dfe290
font_01_sfnt_off00006768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6768 10572 bytes
SHA-256: af450317b6b8771829d66762ae2434ebf17a6831c5bc9d242c5c51c8ca5ebb54

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