Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcec2fae239e9581…

MALICIOUS

PDF

61.7 KB Created: 2020-08-25 01:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: facd853a5674e05484839a4d01c701a5 SHA-1: 4d26652876d89bdd91b96d815d3f9bcf30de7efd SHA-256: bcec2fae239e95812debf1658bdea8b65b176504a6ab74bf8bcf573c5edffcd6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially obfuscated, includes the same URL and keywords related to 'chiweenie breed information', suggesting a lure. The presence of a link farm heuristic further indicates malicious intent to drive traffic to external sites. 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.cc/pify?keyword=chiweenie+breed+information In PDF document text
    • http://files.aerohydroacoustics.com/uploads/1/3/0/8/130815303/xubipinifujesusesov.pdfIn PDF document text
    • http://files.publiclandingrestaurant.com/uploads/1/3/1/3/131398406/8401899.pdfIn PDF document text
    • http://files.olympiatitanbands.org/uploads/1/3/1/0/131070009/jusufagex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/93350589177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/23669782229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5187/files/rowezunubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2690/7035/files/44696766337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/66063681822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/vidilifepawepidorobob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/a_grammar_checker.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA08D 4980 bytes
SHA-256: 81323416b65f072815d21b02b57676e80feacc6b0b5d4aaf77a03066e4e5cf6e
font_01_sfnt_off0000b14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB14C 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000b9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D8 9944 bytes
SHA-256: a0d2ff2d8997a72932e6275d5787ff575e1ad9c25e4c06d09b540d508aa7fc3d
font_03_sfnt_off0000dbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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