Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8872f86b98723f8…

MALICIOUS

PDF

47.6 KB Created: 2020-08-26 14:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 063f448688ca347aae30c44271c6b0a1 SHA-1: 132bb9127ccbc465cf75bee39265a77cc47d1fda SHA-256: e8872f86b98723f83343e0496ff685dec6e5e7468094e4310e585492b0ccaa33
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/pify?keyword=cuestionario+sobre+distintivo+h'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though partially corrupted, contains the same questionnaire title and the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/pify?keyword=cuestionario+sobre+distintivo+h
    • http://files.babymoonllc.com/uploads/1/3/1/4/131453177/3e0796c19c1.pdf
    • http://lerovuju.prismbehavioralconsulting.com/uploads/1/3/1/4/131453630/5161364.pdf
    • http://files.stpaullevittown.org/uploads/1/3/1/3/131384777/1cbab3d6a2394.pdf
    • https://cdn.shopify.com/s/files/1/0467/5816/6691/files/15659797622.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6813/files/blurb_bookwright_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/ios_10_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/jixizotabozezuzabemekit.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/exercices_d_orthographe_cm1.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2261/files/from_hell_graphic_novel_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8062/files/73453367619.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/wigovudewaloposajonixap.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/delta_wing_rc_plane_design.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/50942233625.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdf
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/91047313910.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/dukuvogekotusinusokep.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/wow_time_lost_proto_drake.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_off00006dc8.bin
eb83635e524ee31b2e39cb95290b020abbb33225066b0eb90f9bb2340d1a7455
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC8 2012 bytes
font_01_sfnt_off0000772a.bin
533a8ce6caf470d6e548bbe3c93a47584622fab1617955ecc82620a4324d9b30
pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 4988 bytes
font_02_sfnt_off00008814.bin
faedc63c108f9ceef8bab84bc847c2303737d5e8458a1d4d01d8f692ba4137e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8814 12024 bytes