Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e5cc6f4aca078c…

MALICIOUS

PDF

69.6 KB Created: 2020-12-28 17:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 156c45514d1de518eff5d5ed514fbf3b SHA-1: 9b35a7b4f40798bc620cfbab115cfac171be2793 SHA-256: 29e5cc6f4aca078c3d07d29ffaf521dba8225b09e731a8c28d5d7aa971388c52
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, many of which point to redirector infrastructure designed to lead users to malicious sites, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary lure appears to be an 'Android phone under 5000' offer, which redirects through 'ggtraff.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/aws?utm_term=android+phone+under+5000 In PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/5584531.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xarojapi/silk_bed_sheets_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/sakevupate.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/administracion_de_recursos_humanos_george_bohlander.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4341851-ecdc-4e29-a66d-6a2c69506b64/mimelamunamidebojoxot.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/hpm_dimmer_switch_installation_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f680efc8-8b81-4cf8-a459-4b2e5c9fdb2d/fabidodazopoxer.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/14544589558.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/zapenikubivewomuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a337a809-f76f-45cf-8a65-cb39c01c69e0/idm_6.32_crack_ahmetturan.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/projector_installation_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/engineering_guide_wow_vanilla.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 1

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_off0000d3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C8 4884 bytes
SHA-256: 77199fec2668947718f2ebfe283433f6ffe698c004e2992edf4f6a66cd084ca1
font_01_sfnt_off0000e464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE464 10956 bytes
SHA-256: b9a134602e7b0f0952688df9a69ce005c13188d2d7404c09f6c9f99d9973cd07

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