Malicious PDF — malware analysis report

Static analysis result for SHA-256 750950f2f649dcea…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 12:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbdefd32094fa9768f09d8b85962c9b4 SHA-1: 72a3bc59b35b77bf7ff90232c070648ad3b8a241 SHA-256: 750950f2f649dceadcd30ad5298dbd42db4d00d820625e1f045b4670a46b1f85
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=astm+a53+grade+b+pdf, which is known to host malicious content. This indicates a phishing or scam attempt designed to lead users to malicious sites. No scripts were extracted, but the presence of numerous links suggests a link-farming or redirection-based attack.

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=astm+a53+grade+b+pdf In PDF document text
    • http://files.chebeaguerec.com/uploads/1/3/0/7/130739646/8288100.pdfIn PDF document text
    • http://files.northernfrightsfestival.com/uploads/1/3/2/6/132682883/3db695d8550.pdfIn PDF document text
    • http://jubixu.samuelbloch.fr/uploads/1/3/1/1/131164250/e14e16e48eb9c1.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/1/0431/5948/6626/files/onion_and_calamansi_extract_as_cockroach_killer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4930/4732/files/20648058819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/godutekapomuzipujoxeraseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1821/3797/files/fataxesakivawuwojimuwobim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6567/1833/files/tutorisejov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/mozeragelix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/1496208717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/cxl_roman_numerals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/que_es_un_bosque_tropical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/tuzabizikofatibupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/15123097714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/zamototenixubogifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/kiterepidopiv.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_off00005a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3A 5744 bytes
SHA-256: d86cc0f408f4d6b6169ff550ba7ffd290ff5e5f07a85f8b0f8fbcf2d5a631bea
font_01_sfnt_off00006dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 13484 bytes
SHA-256: bb9048069f999451353e5c36ba5481c66e2fb2a3b7da51e3381a5fef120fc434

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