Malicious PDF — malware analysis report

Static analysis result for SHA-256 eefeda4f815cf68d…

MALICIOUS

PDF

54.2 KB Created: 2020-09-06 19:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ff66393c679c2bcfd1a77ce271f1ba5 SHA-1: 5831d53040739dfa89c10872b81e4f6a3b00ed4e SHA-256: eefeda4f815cf68d69cd285a14ed70f7cb34d26d10edee37636afa1bfacb5399
234 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, specifically pointing to a URL designed to lure users with a 'cheque book issue letter format' pretext. This aligns with a Business Email Compromise (BEC) pattern, aiming to trick recipients into clicking the link. The file also exhibits a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO manipulation for phishing. No scripts were extracted, but the presence of a malicious redirector and the lure content strongly suggest a phishing or BEC attack.

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.link/wix?keyword=cheque+book+issue+letter+format+in+word In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static.usrfiles.com/ugd/cf79db_ff87dbeacab14060bc3bd62ffe2b5071.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/62e2c1_340b53e9c3f944788f4123d4dc05bff8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4b874d_d379b77ea8d24875837b0e6359f77999.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/822ecd_5bfe9f7060a64d8483f63782daed0a9e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/jevuvilozuxiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/tudabosawarogedoduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6065/0393/files/photoshop_touch_apk.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/77941b_d3db8a9fb55c499380f94d3880e0d33c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ad03d_edb95da175924459939decdfebd75ee0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eb4c03_99b6ce99bd4e48fc826798405aad4242.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED0 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off000088cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CB 5472 bytes
SHA-256: 378840c85f958232ab665b55133534fb6ed8235226ef8bcc54d98195bc5f0ebd
font_02_sfnt_off00009b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3F 10184 bytes
SHA-256: 707430020e729a661a4d495540dac1efd4ca14d114bc9e13e1d03e16c476e4ea
font_03_sfnt_off0000be6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6F 3416 bytes
SHA-256: cbf5be0f84fb2bceb79c918233277645c8e8baea6abf833a9cc764b2e48ff54d

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