Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ef726267aabba7…

MALICIOUS

PDF

58.9 KB Created: 2020-09-12 00:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8615a11f9831eb6b10687ab28fc4d49 SHA-1: 6a2121d85e535e387443064b58693da2fc6b781c SHA-256: f4ef726267aabba76f19c37e71787bc390232aac6f17fb4543b8141017325cf7
234 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many pointing to SEO-optimized PDF hosting sites, which is a common tactic for link farms and distributing malicious content. One critical heuristic indicates a malicious redirector link, and another flags a payment redirection lure, suggesting the document's purpose is to trick users into clicking malicious links under the guise of financial information. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.me/wix?keyword=atomic+habits+pdf+summary In PDF document text
    • http://files.kurtweissgerber.com/uploads/1/3/0/7/130775583/8036038.pdfIn PDF document text
    • http://files.saralynnquigley.com/uploads/1/3/1/4/131452800/11a0eb71ea5555.pdfIn PDF document text
    • http://xekal.swartzshowhorses.com/uploads/1/3/1/3/131380265/zaparanox-nesiw-davixuja-kenevem.pdfIn PDF document text
    • http://files.jytbespokeart.com/uploads/1/3/1/4/131452750/e348a999.pdfIn PDF document text
    • http://leximilap.northamericanbazi.com/uploads/1/3/1/4/131437940/tugexig_kupemutalumun.pdfIn PDF document text
    • http://files.bluesoxshop.com/uploads/1/3/2/3/132302768/562654d2bc.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/1/0431/0918/7750/files/nuripiziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/61360445819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/3056583465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3816/files/54263775331.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e4a001_47ec798d12b242199cf12e1124c348f8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/963627_d8872c61a974402c9c7d9527760064ee.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 7

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_off0000a6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 5592 bytes
SHA-256: 78e6aa4a583b02709024b9413890791e2ad5ee42493d045ab56fb0900e5dafd9
font_01_sfnt_off0000b9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CA 11108 bytes
SHA-256: 14c2c010f455c6bfd601e05e39050fb21e5f8ac0622152c1e2f9c86d98fbda8f

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