Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf1d9579b112bcb…

MALICIOUS

PDF

42.8 KB Created: 2020-09-11 02:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e652bc14d7539576b4a4cc3463cbdb13 SHA-1: 355facb0e79f798ff74019730c21376dbde98b16 SHA-256: baf1d9579b112bcbca0e02c716a8c9904c24d6b8899a54037f0c177f1ab5668c
202 Risk Score

Malware Insights

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

The PDF contains a lure impersonating a Chubb travel insurance claim form, combined with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the target URL. The presence of multiple PDF links, including one to a redirector, suggests a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/pify?keyword=chubb+travel+insurance+australia+claim+form In PDF document text
    • http://files.riverviewcharterschool.org/uploads/1/3/1/3/131380345/3f6e0434cd0.pdfIn PDF document text
    • http://files.stbleagues.com/uploads/1/3/0/9/130969059/2822052.pdfIn PDF document text
    • http://pitar.embroideryretreat.com/uploads/1/3/1/0/131070792/47f1eb8bc8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/d6af85_4ea69287098946909426bd16a0d92d98.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2c223_a0e62b445fbe4cad804758a8eabc412b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a43ec6_00e8c9e2495d4f45afc4e8d40aa421d6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7e84b7_1a02208a7eb54b589748c31fb24347c0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1979/6643/files/98022975935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/c_o_c_hack_version_2018.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bf0735_5b72f5dc9f124fccaf5ba8c7d9cb2d39.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d3dcf5be972a4def87de144b65894ee7.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 7

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_off00006863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 5224 bytes
SHA-256: 027443fa249a9fa1fd58ccf8d926ec6bc118469f8c41f36e01b4c61d94f725c4
font_01_sfnt_off00007a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A02 10640 bytes
SHA-256: 5c1445d56ee18822d7ea35fe9f4f91f6fea670ae12c869a0ce53fc54cda96d33

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