Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc27a783855adff…

MALICIOUS

PDF

47.1 KB Created: 2020-08-09 11:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6435e8ebdc642248c00322d598ded5c2 SHA-1: d40b3c6d3e358c7e483c1710fa0f80fd5d3aeea2 SHA-256: abc27a783855adff740f93079a9c159754ca0f222cf9bff639618477c7805282
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, includes text related to 'biotechnology in agriculture' and the wkhtmltopdf generator, suggesting a lure for SEO poisoning or phishing. The presence of a link farm heuristic further supports this. No scripts were extracted, but the primary malicious activity appears to be redirection to a harmful site.

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=advantages+and+disadvantages+of+biotechnology+in+agriculture+pdf In PDF document text
    • http://xezegova.heritagegspkennels.com/uploads/1/3/0/8/130814328/jatumala_punodiwopazoru_watezavuxa.pdfIn PDF document text
    • http://files.honeyofthehive.com/uploads/1/3/1/3/131398440/wosilet.pdfIn PDF document text
    • http://files.crime-fighters.com/uploads/1/3/2/6/132695489/6589748.pdfIn PDF document text
    • http://files.apolloniacampaign.info/uploads/1/3/0/7/130775859/xuxekakadewogo-mitixozezi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/bivupetalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/88995170341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/60128567563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/14105470097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/2008_saturn_vue_repair_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/52888296566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/jb_thomas_lake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vufofabiziterefabul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/hydroxypropyl_cellulose_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4204/files/19072211712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2557/1733/files/29206552827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/34173290245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1940/2397/files/sepokogum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/cuento_almohadon_de_plumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/velifafamar.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A89 5592 bytes
SHA-256: a8b0262857f0c44cbda4d02499aeeacfc689fec6df873620015f95ee1ea34961
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 10080 bytes
SHA-256: 07cec0e32e49500d8929a45edd1e6dd8be233d75918dc1af0b98c00e121e8bae
font_02_sfnt_off0000a012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA012 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230