Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f9c9e7bae5a9ef2…

MALICIOUS

PDF

39.1 KB Created: 2020-08-03 01:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3e0f325270308a6485c87ea7b97670e SHA-1: fb5fa04c58ebc48fcfc7149b2bbf2ddc318ef146 SHA-256: 7f9c9e7bae5a9ef2722089b6a94cd5cdaace4374376057851fb54e83b62faa8c
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=how+to+remove+emoji+from+text+php`. This is part of a link farm designed to lure users through seemingly innocuous content. The ML classifier strongly indicates maliciousness, and the presence of numerous external links, many pointing to PDF files on Shopify, suggests a coordinated SEO poisoning or phishing campaign.

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=how+to+remove+emoji+from+text+php In PDF document text
    • http://files.kidsalldressedup.org/uploads/1/3/0/9/130969656/7eac376.pdfIn PDF document text
    • http://files.randjexpressions.com/uploads/1/3/1/4/131453623/muxurete-kaxuponabuvaj-sikuwuwebajuni-wifomazepuzekiz.pdfIn PDF document text
    • http://wemifo.lunationgeckos.com/uploads/1/3/2/6/132681504/votifunaroj_sebibewiva.pdfIn PDF document text
    • http://files.bazarartandgifts.com/uploads/1/3/0/8/130874431/3952320.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/1/0434/4263/4917/files/50259031259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/43214173013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/27713030543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/53483780763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/lejoker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/sojugenije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3697/files/2895221921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/gixodetuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/suguwonanevobarazipubuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5063/8241/files/dekalb_county_parks_and_recreation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/taromiwelevugaxuvuvowim.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 3

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_off00005cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC3 4976 bytes
SHA-256: 483fe70fe2faf58771a31c180a7a95ef3a4ad138a27ee14f1a173891c04c7638
font_01_sfnt_off00006da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA4 10012 bytes
SHA-256: 8e9e2a6fa071dbcb01e0ca6d2b876ce89f4fb9a25a12263cc9d06e1d7d1a360f

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