Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6b9112276659ca…

MALICIOUS

PDF

51.8 KB Created: 2020-08-18 16:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f385ee53560f6ca7cb655cc2c5bde310 SHA-1: 77188d3d1dd47a62260a0dc38cd339729bf5c588 SHA-256: ab6b9112276659cacb58dc6f304e2cfddd87a70e6ff87cff9d6712e4074db054
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector infrastructure at 'ttraff.com'. Additionally, a large number of links point to PDF files hosted on Shopify, indicating a link farm strategy. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack pattern appears to be SEO manipulation and potentially redirecting users to malicious sites.

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=renal+lithiasis+guidelines In PDF document text
    • http://files.jeffkirchoff.com/uploads/1/3/0/9/130969772/zovixomejuwujo.pdfIn PDF document text
    • http://files.rivalme.org/uploads/1/3/0/7/130776218/fesegerotinex-moxibajurizol-jasisi-sutotexapu.pdfIn PDF document text
    • http://fasavupu.ladse.org/uploads/1/3/0/7/130776485/xamezi_lobufedatatagot_sukofafikono.pdfIn PDF document text
    • http://files.pjmknives.com/uploads/1/3/2/6/132695354/fidobiz-guvorufate.pdfIn PDF document text
    • http://files.originalsexyslave.com/uploads/1/3/0/9/130969004/ca2abe.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/1/0427/7331/5740/files/64156778616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/76064011972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/articulatory_phonetics_bryan_gick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2546/4476/files/90353514009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24370467333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9365/1610/files/calculus_and_analytic_geometry_by_talpur_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4516/5976/files/cisco_2960_ios_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/sodufusigulebisafiku.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_off00008d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D78 5000 bytes
SHA-256: f7d8008f2f030c437b764f2e4e17072de154732f6b6dd744e0aa7ebe56dae703
font_01_sfnt_off00009e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E71 10548 bytes
SHA-256: e140c988cbe27c6eeec3377a46e67632a3961dcd18a4b20ee5c7259f58583d30

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