Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9a46c652076bb0…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 08:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23ad5133d68b3a52c7e4d20d89213b50 SHA-1: 81fef01ed9a58ec16ac52af0ff9307d195a61c79 SHA-256: ce9a46c652076bb0aac74202db2b7658e213ba22d10de745e79891b4957f1e08
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though partially corrupted, contains text referencing 'Love affair movie 1994' and the malicious redirector URL, suggesting a lure to trick users into visiting potentially harmful content. The ML classifier 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=love+affair+movie++1994
    • http://files.tracepickering.com/uploads/1/3/0/8/130814252/99babd631650c1.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/gemusuwutiretewuxenisi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/jewodavenenunokek.pdf
    • https://cdn.shopify.com/s/files/1/0436/7797/4678/files/zakineputoza.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/96213092892.pdf
    • https://cdn.shopify.com/s/files/1/0434/4892/6364/files/71713086638.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/autocad_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/29264786915.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/571475918.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/ralelubofugug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/glowgaze_dayt_se.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_off000064e1.bin
f33a737eb0a3de42e4d7470c7efa3257a2959c329a871c89330d8bf8c42359dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 5000 bytes
font_01_sfnt_off000075eb.bin
ced77bf6ee89f51b03d8d320b1f8ace5fdef23b4dbc7b498a814a67a32c8982d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75EB 10796 bytes

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