Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb5cab988258b12…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 10:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aca67c918bf5110fc6882a9f2c2bdb51 SHA-1: 177bb2590d24baf9d60b20a5df63c50fa5f49d20 SHA-256: 8fb5cab988258b127fac4354176fe2d1856eb7ca3962f9aa88c60cb88ba64d2f
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a construction company balance sheet. The document also functions as a link farm, pointing to numerous other PDF files hosted on various domains, likely for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicates malicious intent.

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/pify?keyword=construction+company+balance+sheet+pdf In PDF document text
    • http://zusaned.spirithorsetrc.org/uploads/1/3/0/9/130969204/dewedeterat.pdfIn PDF document text
    • http://files.megwestphotography.com/uploads/1/3/1/6/131637649/kofakalamebamir-bufidosozunuxif-jugoma.pdfIn PDF document text
    • http://xavepu.shantyshackbrewing.com/uploads/1/3/0/8/130814124/tivogawuwog.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/1/0434/0157/6615/files/cursive_writing_alphabet_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/baganuvekobirupatemobosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/95718530051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8887/9521/files/94667051870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nozapaxemodasefifaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/91719148395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/24766488256.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000687c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687C 5540 bytes
SHA-256: e2d65e3d22ee15065c800dd103238fd3482f32b3d18f1c7531f7bfa8db5c91ca
font_01_sfnt_off00007b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B24 10668 bytes
SHA-256: 06af7071f841fe69d283a505a888b5ea984217c5860a02d9f1878b5127d85df7

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