Malicious PDF — malware analysis report

Static analysis result for SHA-256 047bce948509a1f9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 19:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818a9a7e4835d867fdb4e80398e7b025 SHA-1: 96046efcd99e0805f064d3b6022dbd208224b43f SHA-256: 047bce948509a1f98b78c76b5dcccf47382e51fea37b45530821dd38abb1a3b2
162 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=3d+pdf+exporter+for+inventor+crack'. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=3d+pdf+exporter+for+inventor+crack
    • http://rupedoj.alyssavegerphotography.com/uploads/1/3/0/9/130969858/rotorosuvus.pdf
    • http://files.jerroldscott.com/uploads/1/3/1/4/131407424/2041eaf11.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdf
    • https://cdn.shopify.com/s/files/1/0451/8101/0071/files/disable_bixby_android_9_pie.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/jakipegowowivodalepivutu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/wuwomipokoma.pdf
    • https://cdn.shopify.com/s/files/1/0463/4853/3917/files/arise_past_perfect_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/mixumunogasuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/27470384241.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/vigozareso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8918/files/39272334330.pdf
    • https://cdn.shopify.com/s/files/1/0439/4683/6123/files/hosanna_hillsong_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/stp_plush_lyrics.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006388.bin
6db15b4886c031364e58cbaa586a21a79938f28459bc08745c0e57248f2fc43a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 5200 bytes
font_01_sfnt_off0000754d.bin
a3a657b029f52701115dd5a15cca2d11456c0e188e984cf0d0d7aa52da6c8945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 10928 bytes

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