Malicious PDF — malware analysis report

Static analysis result for SHA-256 805b61ecfc24c184…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 11:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7534ed3a3b8368220af7d0a78a5bd9b SHA-1: 872a4be41de931309b6c230370e043407e26bdd7 SHA-256: 805b61ecfc24c184067eddfa53ca09e4f1b8ebac34d42b53df4745df1b900c60
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links, including one that redirects to a malicious domain, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text suggesting it is a "sourcebook pdf" and includes the malicious URL, indicating a lure to download potentially malicious content. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=acquisitions+incorporated+sourcebook+pdf In PDF document text
    • http://files.sollvios.com/uploads/1/3/1/8/131857791/2999683.pdfIn PDF document text
    • http://files.cosebellecollection.com/uploads/1/3/2/6/132695830/14b1afa382672.pdfIn PDF document text
    • http://files.pumpingthecure.ca/uploads/1/3/1/8/131857914/d60231a121943c.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/1/0431/6289/4498/files/37990906578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/eu_gmp_annex_1_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mujafivejerifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/suvanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/15358994307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/lafimivoleleziramisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/tekupage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/44399402372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/fixorabunoziraxazuriz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3736/6184/files/73403268150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/nofojamuwuxogatonuju.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 5436 bytes
SHA-256: e5b8646c5f58a389d59261cc8850091df1f9f719e9250ad39184f54702d246af
font_01_sfnt_off0000813b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813B 10544 bytes
SHA-256: 193f98abe898c5e7f4143672af3eb104c3b9867cd1decdcc54a9622b85e5adf4

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