Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa6b7c615d29764…

MALICIOUS

PDF

42.2 KB Created: 2020-08-04 07:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae9391e44f1aabdd7ebbd8ad57e8dbe3 SHA-1: 80762c135e5061bc74df4667197a8bf0efa2b6d5 SHA-256: dfa6b7c615d2976471b1b7d52f2fef34ee4af09720f442e8fdcdfe23ce02f106
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ceftriaxona+dosis+perros+pdf', which is flagged as malicious. This suggests the PDF is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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=ceftriaxona+dosis+perros+pdf In PDF document text
    • http://files.goldstripecoffee.com/uploads/1/3/1/4/131483361/vebek.pdfIn PDF document text
    • http://files.deviniska.com/uploads/1/3/1/4/131438353/45823dea287203f.pdfIn PDF document text
    • http://files.sustainme.co.za/uploads/1/3/1/4/131453252/legesigimujopimuti.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/1/0435/9749/6483/files/vixem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8887/files/ghost_in_the_shell._torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7892/7014/files/webofifarubilujopuboked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/ncaa_14_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/non_spatial_data_in_gis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/8044879654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/gipidobadilosadaxavew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4948/3420/files/we_are_your_friends_imdb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/3120936639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2844/6358/files/96235842363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/pearson_custom_business_resources.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_off000065ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 4976 bytes
SHA-256: 9b983aa4ea5aa33e1e06978c06f8603c749a4ae00bed1a5c95ba2dc68a05903d
font_01_sfnt_off000076aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AA 11064 bytes
SHA-256: 47a2cf0edf4184a4dac74aa3db9ae2a652f165b765e326c32c57231eddd5e80f

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