Malicious PDF — malware analysis report

Static analysis result for SHA-256 b71fd9e11d34407d…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 07:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b487034897c373a9c3565cd6c97787b SHA-1: 64f3e0172cc2aac82414973fa71b397a7dbaab70 SHA-256: b71fd9e11d34407d7fb505a6b677ec2ffffb91d0995893a9923d5e85ba619610
194 Risk Score

Malware Insights

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

The PDF contains a link farm with 26 external links, including a redirector to 'ttraff.ru'. This indicates a phishing or malicious redirection attempt. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific behaviors.

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=web+design+tools In PDF document text
    • http://files.baroverbar.com/uploads/1/3/2/6/132682295/wedukeku.pdfIn PDF document text
    • http://files.donovankleintv.com/uploads/1/3/1/4/131453054/9893319.pdfIn PDF document text
    • http://files.jamesaaronhogan.com/uploads/1/3/1/6/131606262/wodimuvifos_zezuwamogipe_bezexew_xejawuwir.pdfIn PDF document text
    • http://files.atwatervillagepsych.com/uploads/1/3/0/8/130874238/puwanadotojadojozi.pdfIn PDF document text
    • http://xebebifag.hockeyaustralia.net/uploads/1/3/0/7/130775797/rivakipezatifesolu.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/1/0435/1701/8267/files/27798291890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/18623100289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/arthur_miller_playing_for_time.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/59451649023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/xazafubuxikozikebota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3789/5325/files/cover_letter_for_engineering_jobs_fresh_graduate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9806/9410/files/xawavunoxiditela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/philips_beard_trimmer_7000_manual.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_off0000636d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636D 4840 bytes
SHA-256: 03d7551e3dbb51a03f35445fd9afb967364b799930a028709e38eb532356e0fc
font_01_sfnt_off000073fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FE 10036 bytes
SHA-256: 5608fd32c601a43629691e1a5deb61140ea053aad68ccb58bf330072e938e3a8

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