Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefcdfbf3d5af1aa…

MALICIOUS

PDF

38.5 KB Created: 2020-08-23 01:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dc555ebc4b51d35f661d002117fd432 SHA-1: 53af256566c503363b44b9fe52590017da02aca0 SHA-256: fefcdfbf3d5af1aaaf8c9f439f2751cc9d44ebc43c73f76065eb38a7332bb429
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.ru/pify?keyword=barito+pacific+annual+report+2016', suggesting a lure related to a financial report. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy to potentially distribute further malicious content or improve SEO for malicious sites. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=barito+pacific+annual+report+2016 In PDF document text
    • http://zusugize.thebaileybakery.com/uploads/1/3/1/8/131857054/kelasuvobafulodomaki.pdfIn PDF document text
    • http://kogifewa.aeesei.com/uploads/1/3/1/0/131070571/badabezuwufuw_bedixubeviwonam_nokudagave_falipugesuvulo.pdfIn PDF document text
    • http://files.hkcompetitionassociation.org/uploads/1/3/1/3/131379594/kazewasajinujijit.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/1/0431/3228/9175/files/font_arciform_ttf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/ethiopian_grade_9_biology_student_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/vilamofizujamirol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7966/1736/files/ivy_tech_accuplacer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/pivofukopuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6390/files/modified_mrc_dyspnea_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/66411007371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5203/9324/files/zelopokeduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/vepivalerefapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1347/1384/files/nepopudo.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACC 5240 bytes
SHA-256: 6c5784555ee32819089732889eec886addc456031de4b41a794e21194b4597c9
font_01_sfnt_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 10156 bytes
SHA-256: d49bcde42438d5c29ed4cb4c9a40c7e4b4414106663373a66305e6759a976d96
font_02_sfnt_off00007f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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