Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf1baf3f14cbd03d…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 17:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3661e4ee826f62a907187f89768aa17a SHA-1: 269e78b33b4cc5dcd94ea24257dad51ecf1d2241 SHA-256: bf1baf3f14cbd03d7472b41affe95db91c1152a272e4c0ad6ef86f7e220e9d7f
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 one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the malicious URL, suggesting a lure to a potentially harmful site. 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.ru/wb?keyword=matador%206%20burner%20hooded%20boss%20bbq%20kitchen%20manual In PDF document text
    • http://files.greaterpittsburghquickcash.com/uploads/1/3/1/4/131438316/2839197.pdfIn PDF document text
    • http://files.almosthomecaninerescue.com/uploads/1/3/1/4/131453267/63448b4ff.pdfIn PDF document text
    • http://files.move-or-stay.com/uploads/1/3/0/8/130813781/vunobemezosuxupo.pdfIn PDF document text
    • http://supijune.gracesocialsector.com/uploads/1/3/1/4/131482952/jafumamawu.pdfIn PDF document text
    • http://files.bygardensgrace.com/uploads/1/3/2/6/132683130/topafoxisudo_zarivoveb_lopatimi.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/1/0440/1342/0702/files/employment_news_august_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/bowflex_workout_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/42817589062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/56648887437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6848/files/30697027659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/nulitilugoguforomib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2558/8639/files/35315575789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/xexolisamoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/vehicle_dynamics_gillespie_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/45667948210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/sociology_book_for_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/79247891552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/bitavimakudabimu.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 5

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_off000072b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B2 5668 bytes
SHA-256: 8344da6d38b4d74d9e4f477848039e71de436f3e19632f6ffadf4e2b20a61463
font_01_sfnt_off000085c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C9 10744 bytes
SHA-256: d9688f4fc27033e00b1b688acda9c87719858bae808c19d9937db96428f9760d

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