Malicious PDF — malware analysis report

Static analysis result for SHA-256 293bbf693466bc04…

MALICIOUS

PDF

33.5 KB Created: 2020-08-09 08:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 163be2927d1e56bef1f914bd526f5ead SHA-1: 658156074e2d87e5066c537ed3425da02a860a3a SHA-256: 293bbf693466bc04d90a5e723adc637252a32f3e77e74f7a46a0dbd27c8cb6bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by a machine learning classifier and contains a link farm of external PDFs. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=letter+a+practice+sheets+pdf', is identified as a known malicious redirector. The document's purpose appears to be to lure users into clicking these links, potentially leading to further malicious content or downloads.

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=letter+a+practice+sheets+pdf In PDF document text
    • http://files.gracesiouxcity.org/uploads/1/3/0/7/130775786/pedaxadipefap.pdfIn PDF document text
    • http://jizixi.htrsusa.com/uploads/1/3/1/4/131452883/32f37128d016818.pdfIn PDF document text
    • http://nufefepux.eatthaicafe.com/uploads/1/3/2/3/132302921/4daafd41f1a79.pdfIn PDF document text
    • http://files.marcelstewartart.com/uploads/1/3/1/8/131871799/045516082cf.pdfIn PDF document text
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.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/1/0434/4528/9127/files/insert_page_into.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/durga_temple_aihole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/19394389269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/3074986789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/65633806147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/property_appraisal_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/43774816652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/gomakanuxubezisimedobuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1035/8439/files/68747195550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/27476577133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/xudulolitarurapokogafu.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 8

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_off00004728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4728 5152 bytes
SHA-256: d60b83ddb49469167154f0001a6e8f0e8f72260937be3788aadc26def894502d
font_01_sfnt_off000058a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A9 9564 bytes
SHA-256: 004a0322803a6a76e800e5ec66572ccf14e61406332ff48f28d225771c444047

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