Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8ffd4882f8f948…

MALICIOUS

PDF

48.3 KB Created: 2020-08-23 21:28:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ca2f37de98d88c220f9e618d9d2afac SHA-1: c6a957894b684fde374fb2a891ec35828539f685 SHA-256: 9a8ffd4882f8f948eb3abd7b9eb956ecda0600e54331a8ad59789dd56995ecbb
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though corrupted, appears to contain references to firewall logs, potentially as a lure. The presence of a link farm suggests an attempt to distribute malicious content or phishing pages. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

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=checkpoint+firewall+log+format In PDF document text
    • http://wofimota.cypresspointportal.com/uploads/1/3/1/6/131606349/mekebigakiwufofebuju.pdfIn PDF document text
    • http://files.coluxy.com/uploads/1/3/1/6/131607131/burifewafunogawipem.pdfIn PDF document text
    • http://jikix.calgarynaturopathicdoctor.org/uploads/1/3/2/7/132710745/1454865.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/1/0434/6655/5556/files/leranivipukibosipowezasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/zagibikilaguzivazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/tigira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9622/files/39380563246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/15774219063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/96278276540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/79530498573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/17215201258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7618/2165/files/fitted_crib_sheet_bed_bath_and_beyond.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
🗂 Part of campaign: dalessandroscouting.com 4 samples

Related samples 2

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_off000073eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 5312 bytes
SHA-256: e3324246e8ccc7b7d8e007191368fac74368866a98bc52fdd8210ff85261fa35
font_01_sfnt_off000085dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DD 14784 bytes
SHA-256: e89b4eb47be6723cc84b42f6b74348a16b3035e93eddc136ddbb4afdc6ffd928

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