Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e0ff30e5e0e6aa…

MALICIOUS

PDF

45.4 KB Created: 2020-08-01 09:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b42b1782e1ecdc9d08124d14f85df0d3 SHA-1: f0e2cae3eaec75007f0e0b22f2ebd4c7912f88f6 SHA-256: 27e0ff30e5e0e6aa62ebbf2fb011605666bb38fd6e3fa8dbbf93c91937905bc7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=c+header+file+example'. Another critical heuristic indicated a PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The document body itself is heavily obfuscated and contains some of the extracted URLs.

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=c+header+file+example In PDF document text
    • http://files.caitlinmylestherapy.com/uploads/1/3/1/4/131483097/pigiwopexurotop.pdfIn PDF document text
    • http://files.gabrielledeveaux.com/uploads/1/3/2/7/132740399/dasegewerugebi.pdfIn PDF document text
    • http://files.tonystledger.com/uploads/1/3/1/3/131398380/fubupibev.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/1/0435/2232/6696/files/44802699885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/57657436884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/miresalobolofakarekij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/90814904320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/75584650816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/72921192202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/dimadanexafebilifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/78376976244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/86656709652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/fudolubipinoxigerugazosiz.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_off000067dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DC 5076 bytes
SHA-256: 689b7aa448eaed56af46713258408e4b00fff34653ba1580cb4a06ec69880122
font_01_sfnt_off000078f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F4 15408 bytes
SHA-256: 3192cddec98205e04c6d3c56567788f34011406fcf4fafe30312be499f2fd45a

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