Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd670dbdb5097321…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 21:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf2a84d53aae5a7fcc306209c009356b SHA-1: 3e8c3c8094192a23abe6008ef044d188142771fb SHA-256: fd670dbdb5097321746042f38abc37d0e3c5bdb6f2ee8d5e6bfc62fc08cf5e0c
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=perbedaan+pasar+modal+syariah+dan+konvensional+pdf'. The ML classifier also strongly indicated maliciousness.

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=perbedaan+pasar+modal+syariah+dan+konvensional+pdf In PDF document text
    • http://files.tchaikovskiana.com/uploads/1/3/0/8/130874566/fodatoziwonunitaw.pdfIn PDF document text
    • http://files.darkhorsesaddlery.com/uploads/1/3/2/3/132303035/7dd19e.pdfIn PDF document text
    • http://files.chazakbordercollies.com/uploads/1/3/2/7/132740805/babez-doxate.pdfIn PDF document text
    • http://files.jedburghgs.com/uploads/1/3/2/7/132710630/8601675.pdfIn PDF document text
    • http://gazol.thomasjonesschool.org/uploads/1/3/0/7/130739590/17acd1c.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/1/0434/1517/5335/files/organic_chemistry_david_klein_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/43326363752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/8652111378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/bis_prot_warrior_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/bilekugazitoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/pepedalodidarowaximugidel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4214/files/gilexogikoduwagurilig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/japugugoliwuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/17252016054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/20652948382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/perokazijuvamife.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_off00006792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 5648 bytes
SHA-256: 06b1acfb699737e9aadb844dc15a8401e6b317bb57d25303bdeb4cd9fd4ad8eb
font_01_sfnt_off00007aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA1 10060 bytes
SHA-256: 7292096904203f0ce24fdf6907fc406b68488498a53f133e4d61a834d10b4c28

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