Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f305a3afd4f9c3e…

MALICIOUS

PDF

42.1 KB Created: 2020-08-23 00:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebd27db8f15ab9f67e447adaebd19e8b SHA-1: 4023efdd9b75339e30860820196ebaa98ab8c101 SHA-256: 8f305a3afd4f9c3eb8623e6a32d228c9663e365d0a9460f0c3567b60a3a7264a
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The presence of a link farm suggests an attempt to distribute malicious content or phish users. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=alight+motion+pro+2.+4.+3 In PDF document text
    • http://files.lastanzadistefanie.com/uploads/1/3/0/9/130969762/db684a1.pdfIn PDF document text
    • http://files.evandusenportfolio.com/uploads/1/3/1/1/131164479/rikez-xirim-xuxuradelog-laruzamimonirup.pdfIn PDF document text
    • http://xefuximu.icaihokokngo.com/uploads/1/3/2/7/132712615/454b52bcc4b4.pdfIn PDF document text
    • http://files.livingwaterscooperative.org/uploads/1/3/2/7/132710669/00caf61c3e.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/1/0437/2630/7480/files/nixutejazexijolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/agrometeorologia_agricola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/75555628589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/1603/6008/files/aggiornamento_android_10_quando_esce.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/18500625082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/lafilesejosubufigodevafev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/kenabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6457/files/anti_bribery_policy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/40509119338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/zamusoziwofato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/tujojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/54858144113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.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 8

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_off00005b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B69 5252 bytes
SHA-256: 9401271673565147a02e4a969a3fba299214e60384f827e60dd370565e291b6a
font_01_sfnt_off00006d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D32 13904 bytes
SHA-256: 62abdcf337584c91089dc5cd5db552164515f4143527e55f1905de92bd2d11c9

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