Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f54389871d09850…

MALICIOUS

PDF

42.9 KB Created: 2020-07-28 13:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cab4a1788966db0a0c0eaa2c49fc9a20 SHA-1: 07ac43fabdeea442b591166dc6bbe3bdc103a75a SHA-256: 0f54389871d0985044db5b0a05616c01bebddcf00d8146b4ca1d5ba091b16883
194 Risk Score

Malware Insights

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

This PDF file contains multiple links to a redirector URL, specifically 'https://ttraff.cc/pify?keyword=fact+and+opinion+worksheets', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to educational worksheets. The presence of numerous external PDF links, many pointing to benign Shopify domains but likely part of a link farm, further supports a malicious intent to drive traffic to the redirector. 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=fact+and+opinion+worksheets In PDF document text
    • http://files.5starpdrllc.com/uploads/1/3/0/9/130968968/7376804.pdfIn PDF document text
    • http://files.alexgraner.com/uploads/1/3/1/3/131379833/2334602.pdfIn PDF document text
    • http://files.drgordonself.com/uploads/1/3/0/7/130775921/veluwisipuguja_kezitela_bikixokezed.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/1/0434/1674/8190/files/vanigutilitilokezaxososa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/69350344313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5521/0905/files/26571445893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/tafonifobofefupur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/91661156164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/32815190623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/59376863035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/vogovopesifab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/96473761002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/9945572705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/26229372321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/badiwiw.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_off00006b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B91 5028 bytes
SHA-256: c7fac2ac73975fdc69b7a2ec3881134566d359f07b168a92937e78e7006efcca
font_01_sfnt_off00007caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAF 9964 bytes
SHA-256: 6e00c2fae7abc30873c44fecb75cba79d03eae6eee9872d33b539bc3bda6aaea

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