Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4bbe4476a0d4af…

MALICIOUS

PDF

43.2 KB Created: 2020-08-18 13:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1289623e13c054567c059ca50c32af0a SHA-1: fbd6ac5021168b100cd1bef6ef038c2c1c714fc7 SHA-256: bf4bbe4476a0d4af309f75246d4ef0832c0e45c9e7670dbbb5b41ea990290bb0
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.cc/pify?keyword=michelin+guide+singapore+2019', suggesting a lure to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy. 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=michelin+guide+singapore+2019 In PDF document text
    • http://files.shoalbaysportfishing.com/uploads/1/3/2/7/132712209/20a9ab9396f422.pdfIn PDF document text
    • http://files.lloydketterlingchristmascarol.org/uploads/1/3/1/4/131438188/968618.pdfIn PDF document text
    • http://segixip.modelartaus.com/uploads/1/3/1/3/131379578/978463baeec87ac.pdfIn PDF document text
    • http://files.innov8tion.ca/uploads/1/3/1/3/131398367/93cc6ede.pdfIn PDF document text
    • http://files.samynic.com/uploads/1/3/2/6/132695257/wapumu.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/1/0431/3242/0262/files/6th_grade_math_worksheets_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/astrill_vpn_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0230/4408/files/92117215496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6486/0580/files/4861717513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/getosawovisokuximej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/57170192522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/69391456435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/80526259387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/dolifisokesitow.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 4

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_off00006a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A56 5820 bytes
SHA-256: 4349af3a6b53088e9ab7b7763bf2d383b9af3cc386a93a38507834f536ae0b2a
font_01_sfnt_off00007e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1F 10048 bytes
SHA-256: 985f88ad08441207d55e6bdf1c9e491f7e79e769cbe0cbbc263695e591dcd84f

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