Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec2fc52ae2d86c3…

MALICIOUS

PDF

53.9 KB Created: 2020-08-19 05:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a28c7266f67962fc96f5ba5d4a79dd1 SHA-1: 5261974942a0770bee6fff5cdfd99a8f0f728733 SHA-256: 8ec2fc52ae2d86c3908bff4fb616378c57b79c60d82ce31c49c498b9ad65708f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a compilation report, with a primary malicious redirector URL. The document body is heavily obfuscated and contains embedded URLs, including the malicious redirector. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure.

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=compilation+report+sample+2018+philippines In PDF document text
    • http://files.michigancabincraft.com/uploads/1/3/0/8/130813516/xosepuni_miwuluw_melerosokudumax_zuzetux.pdfIn PDF document text
    • http://kubif.tkcheng-photography.com/uploads/1/3/2/6/132695465/4204d9e0c14736.pdfIn PDF document text
    • http://tugijov.landtrustscv.com/uploads/1/3/1/4/131407406/5930567.pdfIn PDF document text
    • http://puzexerur.bourkeysblog.net/uploads/1/3/2/3/132302936/ledijasekukiranezov.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/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6387/7537/files/janojupakovumibisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0190/3264/files/vixekali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/raci_matrix_project_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/ibc_amendment_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/96067560880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/suluxamexezo.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 2

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_off00008c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C62 5484 bytes
SHA-256: fb12fe897ea65439d800773b155ab88709298bb01ffa5684f899ec550bf272a3
font_01_sfnt_off00009ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECB 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000a758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA758 10256 bytes
SHA-256: 24fc9d39724c4097a716520f4c18a4f5d9b33ce6445637eb37f2112f95f17daa

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