Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2d41056c3ea8e9…

MALICIOUS

PDF

45.8 KB Created: 2020-08-14 20:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1b91aa3f01acca0dfd6e1b16ec0410d SHA-1: 87692aaf41b141dad5b71bd48348ee73a117a417 SHA-256: 8b2d41056c3ea8e99d14703874fc705c4049ee3d97ba35be52542ef2226722a7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, appears to contain the same URL and references a PDF related to fluid mechanics, likely as a lure. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.com/wb?keyword=a%20text%20book%20of%20fluid%20mechanics%20and%20hydraulic%20machines%20pdf In PDF document text
    • http://guduruz.calvarygo.org/uploads/1/3/1/8/131856917/xojedejoxem-puboxivenudi.pdfIn PDF document text
    • http://neres.acutabovelawncare.org/uploads/1/3/2/6/132695535/giladafamuso-gafuxolunewinu-zupofavitot.pdfIn PDF document text
    • http://files.redsquirrelconservation.ca/uploads/1/3/2/8/132814030/1166259.pdfIn PDF document text
    • http://files.richbrownies.com/uploads/1/3/1/4/131483830/424c10c8ec51a.pdfIn PDF document text
    • http://xazib.thegreatwines.com/uploads/1/3/2/6/132682883/dajamofadepa-zosuliji.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/1/0431/3609/0267/files/84903582282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/25144614954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/vagujowupemalazufoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/mutuwejadimivip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/na_k_atpase_pump.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/togujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/95189922392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6459/8434/files/sulud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/classical_waterfall_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/20206098106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/kotazijuzepubovi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 5760 bytes
SHA-256: 8871d6e4d20d9557d75e8a552cde8a3a94617306a6f75b271244bb50a5c36697
font_01_sfnt_off000070df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DF 2116 bytes
SHA-256: 49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
font_02_sfnt_off00007aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAA 14504 bytes
SHA-256: 536a0570aaed3ba84be9011337d1092349c473af2e4cb0ac51adf072cb727dda

Open this report in the interactive analyzer, or submit your own file for analysis.