Malicious PDF — malware analysis report

Static analysis result for SHA-256 350b79a85b01bc43…

MALICIOUS

PDF

36.7 KB Created: 2020-08-13 23:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c3af4ca62a7027cb611a1abbaadb844 SHA-1: f8cdfb4716cccd83334f068d6b9fa7ed23f37590 SHA-256: 350b79a85b01bc438757f817df05580fb7d05435ab15bab34fbb6a128132012a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=carestream+vue+motion+user+guide`. This indicates the document's primary purpose is to trick the user into visiting a malicious URL. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt, with `https://cdn.shopify.com/s/files/1/0431/6623/6834/files/pogilinameluledikadurugen.pdf` being the first listed. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

Heuristics 3

  • 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.
  • 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=carestream+vue+motion+user+guide
    • http://files.onlinefitnessunderground.com/uploads/1/3/2/8/132815123/pebepimin_zekuko_rabefesar_dobepo.pdf
    • http://files.beyondtheedgeinstitute.com/uploads/1/3/0/7/130739951/738441.pdf
    • http://files.cristislife.com/uploads/1/3/2/7/132740905/garefafomos-sikuriririzizuz-lutexatur.pdf
    • http://xugodene.truthsalem.com/uploads/1/3/0/8/130874038/vizifejuvasubozuvofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/pogilinameluledikadurugen.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/gate_probability_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4993/files/dorupozosifuxop.pdf
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/3410640066.pdf
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/vuzila.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/bakitekonogekuwufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.pdf
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/mariage_d_amour_partitura_para_piano.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/betrayal_at_krondor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/2245457872.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/kofojosibuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0274/files/ateten_gmlek_tahlil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048c8.bin
e9df1abf47a688c52bbf36275161d4c71dd3d5463c3e540779115c3c600865d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x48C8 3304 bytes
font_01_sfnt_off000054ae.bin
a02a487c76423501ba90e0ca023c215b0618d4f6bf30919e70ae482ad559576c
pdf-font-stream PDF embedded font (sfnt) at offset 0x54AE 5080 bytes
font_02_sfnt_off000065e5.bin
8501efe439b13c24089f8d57d848e9dc0856cca87e93756f39f5f134219cc4f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 9216 bytes