Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3cb3544bd01b5a7…

MALICIOUS

PDF

33.2 KB Created: 2020-08-05 11:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a989c29b2d748f2eeef748dbab63017d SHA-1: 78af44fcaa57fb6dcbeb24a2b4daf602e997962f SHA-256: f3cb3544bd01b5a7778ab5e978311e01c2e45a8877ebe8e6a55aad5693e8629c
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt using a link farm to obscure the malicious destination.

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.ru/pify?keyword=pure+imagination+sheet+music+pdf+free In PDF document text
    • http://files.alliesforautism.com/uploads/1/3/2/6/132695278/wukafuvedugonod-xikuruxapuze-pixuwaz-dutimamajuxurop.pdfIn PDF document text
    • http://files.sprocket-theatre.com/uploads/1/3/2/8/132816066/94b3b40c.pdfIn PDF document text
    • http://files.easygrammar.com/uploads/1/3/1/3/131379738/2671219.pdfIn PDF document text
    • http://files.daygroupcompany.com/uploads/1/3/1/6/131606467/4330356.pdfIn PDF document text
    • http://files.shieldoffaithaz.org/uploads/1/3/0/9/130969059/c4f7107a5a.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/1/0433/3341/9166/files/lalitha_sahasranamam_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1969/files/tormented_soul_divinity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/jirasasujixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/ielts_reading_and_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0764/7639/files/91125120735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/31199507309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/86766985494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/48208986975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/snurfle_meiosis_worksheet._answer_key.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_off0000445a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x445A 5540 bytes
SHA-256: 002eecc597fc0006ebeda7bdae10be06872fdf18ef815d71c6512c10105989cd
font_01_sfnt_off00005707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5707 9656 bytes
SHA-256: ac499d5fcf412f9aa48eeaa951f07b88519ea9e2eb40a3e55ac18b4a20cf557f

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