Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd78f7f960d54468…

MALICIOUS

PDF

66.6 KB Created: 2020-08-30 15:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a03a8c61d80c8191fec4e6558cdd9ba7 SHA-1: 5807f28ecf2b538664675f4919b11939176585bd SHA-256: cd78f7f960d544684b3564a81f0b417c6ba72616282cd6fdc243156a98ff02d9
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an advance-fee scam lure, indicating a fraudulent intent. It also contains a critical heuristic for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also hosts a link farm of other PDFs, with the highest concentration on 'cdn.shopify.com'.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.com/wix?keyword=lee+child+night+school+torrent
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/akinatr_indir_apk.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/30375265988.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/contingency_approach_to_management.pdf
    • https://cdn.shopify.com/s/files/1/0449/8338/6280/files/75478786379.pdf
    • https://cdn.shopify.com/s/files/1/0434/2585/7703/files/10450939254.pdf
    • https://cdn.shopify.com/s/files/1/0445/8224/0420/files/sheet_metal_forming_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/11430440711.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/83656116677.pdf
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/nominal_group_technique.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/jafanijixivoxedijidukit.pdf
    • https://cdn.shopify.com/s/files/1/0427/9602/3975/files/83581722763.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/2148059115.pdf
    • https://cdn.shopify.com/s/files/1/0434/0432/9127/files/tennessee_boat_bill_of_sale.pdf
    • https://static.usrfiles.com/ugd/fbccce_6f50bbee6d404c3ea03219975ec387eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_24841f9d180540919a1375c8fd60701a.pdf
    • https://static.usrfiles.com/ugd/0b46e6_ec1943547db74ee298d80ab785c89266.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_off0000c6a8.bin
bfe08b703908ecd764eba6d74e7a883b18bab6fb6a3ca087e6366cadac735b2f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A8 4932 bytes
font_01_sfnt_off0000d762.bin
2522088c502c050cc50b91d425394d9f6854af854309da98d3924bc7921fc6aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xD762 11712 bytes