Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a94bbae352ed5e…

MALICIOUS

PDF

55.6 KB Created: 2020-08-09 18:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5371a3165c84f2fee8530b7bd21a13b2 SHA-1: 841cdeba618f81a04af972932c1f5fd331768269 SHA-256: 34a94bbae352ed5e6f7bb0947da07930f9743db27d0482b08fbba21022e67027
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link and a link farm, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' directly points to the malicious URL 'https://ttraff.cc/pify?keyword=placenta+accreta+index+pdf'. The 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick the user into clicking the link. No scripts were extracted, limiting the analysis of the payload.

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.
  • 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
  • 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=placenta+accreta+index+pdf
    • http://files.kimsieboldstudios.com/uploads/1/3/1/1/131164350/2691664.pdf
    • http://files.newenergyera.org/uploads/1/3/2/8/132814593/bitofij-lurugosalarejuj.pdf
    • http://gurilago.bigchipsinvestments.com/uploads/1/3/1/0/131070420/sifusepoj-dubidonumiv-xurikowofipete-xukofo.pdf
    • http://files.yogashak.com/uploads/1/3/0/8/130874222/zuzomobowomenudosig.pdf
    • http://futit.phoenixtherise.com/uploads/1/3/0/8/130874493/kizobixebod-kapawumatesumul-wipifiwud.pdf
    • http://gurilago.bigchipsinvestme
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/50267766388.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/2665393149.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/vemetawaxivuvibupujojan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/nenosaxabigelinovizir.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/27649417006.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/wepasonuwijotimugutuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/vexenene.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6257/files/bailey_and_love_surgery_24th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6925/files/85248715810.pdf
    • https://cdn.shopify.com/s/files/1/0440/5886/9910/files/callan_method_english_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5879/files/loxokatu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/zivewerokiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/romufal.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/52405608720.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_off00008e9d.bin
d0f4120e879ba55d0b56ce2625f68a816550dfec6861366fe91483125416e013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9D 5040 bytes
font_01_sfnt_off00009fd9.bin
37e7488486500d845276cc28d946a8dd373c85d1dd6b72effe6a40ad04c4c21a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD9 15264 bytes

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