Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4b9f9695b14724…

MALICIOUS

PDF

43.4 KB Created: 2020-08-05 16:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 881d3f84a6bb3f1a3585294bf45a4fc7 SHA-1: a76ceed7bd7877a24e6ffd71f87f8fec44ad51e9 SHA-256: 0f4b9f9695b147244e736a2ac279b25f09e64a5217db36359d9233a2be94fd67
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text related to 'Atkins 40 diet plan pdf' and a malicious URL, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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=atkins+40+diet+plan+pdf In PDF document text
    • http://files.hiswillnotmine.org/uploads/1/3/0/9/130970012/wutarikozezuzor.pdfIn PDF document text
    • http://xojilefi.i95corridormobility.com/uploads/1/3/1/4/131452883/958e4eb09eb.pdfIn PDF document text
    • http://files.mtbwithstacy.com/uploads/1/3/1/4/131409574/454108e567.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/1/0435/2750/4024/files/4727012393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/69787435755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8802/7543/files/rotmg_spirit_dagger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59677855830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/79222444781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/piwozupapilis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/lafexinavuloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/80189445795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36149341097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/12090237440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2085/2122/files/69458172267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/rutumebademonudil.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 5

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_off000069b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 5220 bytes
SHA-256: 92e0452220793a50d66999f546e16f3761cc1b93c456de98b1c0dbfec9fc736e
font_01_sfnt_off00007ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA1 10972 bytes
SHA-256: ce2c2a31374068626deb7fdd134e2091e5bd11fd1598871c4a2007b7d85889c9

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