Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abfa7dab34483a2…

MALICIOUS

PDF

38.5 KB Created: 2020-08-17 00:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ba055fbc224e29110956678cec3beed SHA-1: 0e410c963be4b5cf5c91eff70fdf3b87204bcacb SHA-256: 3abfa7dab34483a2ed83dd06d146f7cc6875bb40677cafdd90db7df5ab52c280
154 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=android+10+release+time+oneplus'. This indicates the document is designed to lure users to a potentially harmful website. Additionally, the presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=android+10+release+time+oneplus
    • http://files.aeesei.com/uploads/1/3/1/6/131607093/resupawezokirojap.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/acta_constitutiva_de_grupo_bimbo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/abaqus_theory_manual_6._14.pdf
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/91729586914.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/jisazagujawipax.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/korotimenavexepazaxaji.pdf
    • https://cdn.shopify.com/s/files/1/0448/1715/4208/files/bartok_mikrokosmos_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/sipit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059b0.bin
412848e0cd79b140aa99f8c3f24543e9848d113a9caa3573b4af37551cbc3cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B0 5288 bytes
font_01_sfnt_off00006b8f.bin
1fc6d7f5552b8d453b7b59b2c793c8636d8a9294a45b32384002a3b7dd5e9f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 10032 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.