Malicious PDF — malware analysis report

Static analysis result for SHA-256 850f4e171c601659…

MALICIOUS

PDF

60.1 KB Created: 2020-08-24 02:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd542b6614758800275f30ed0255c704 SHA-1: 3987b61226a3daf579de55e4a8da724d5ee5bc24 SHA-256: 850f4e171c601659eb62d52e0b231e1989bfafce8e8d6258d82204fccd6dd4b5
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically `https://ttraff.cc/pify?keyword=benefits+of+material+requirement+planning+pdf`. This URL is flagged as a known malicious redirector and is part of an SEO link farm, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent.

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=benefits+of+material+requirement+planning+pdf In PDF document text
    • http://files.micdropdj.com/uploads/1/3/1/4/131407818/fufivosavaje_bidepidirizit.pdfIn PDF document text
    • http://files.americancollectorsusa.com/uploads/1/3/1/0/131070646/betagosifurok-tifovuwikelir-tanubix.pdfIn PDF document text
    • http://files.sineadwhite.com/uploads/1/3/2/6/132682585/mekix.pdfIn PDF document text
    • http://seziti.bprising.com/uploads/1/3/1/3/131398027/fuxovib.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/1/0435/6970/9217/files/brookstone_bluetooth_earbuds_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/ligne_11_aix_en_bus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/fefuzewopuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/sizibigus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3373/8911/files/14977445710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/79974909467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/fulinupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/milliseconds_to_second.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/berio_folk_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/19250676283.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_off0000acee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACEE 5536 bytes
SHA-256: f1c22c4487bf2a67d25844886deada689e002f5b032f79a8c35951af837577fb
font_01_sfnt_off0000bfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA1 10448 bytes
SHA-256: c073859f4894fde55448d76c1d5dd9ca4c076e861f193d0c6901d046ba7efd26

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