Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d8aac37e0d7da5…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 22:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63e3b0c8ff2e83dd51eb3914f01b4b93 SHA-1: 37d0ba745922744c94d4a723cb606e21a52c4676 SHA-256: d9d8aac37e0d7da56c63fad2e4888e291fa810449b837838b0d62c2fc673f796
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=loan+agreement+template+uk+pdf'. This indicates a phishing or social engineering attempt, likely to trick users into downloading further malware or visiting malicious sites. The document body, though heavily obfuscated, contains references to 'loan agreement template uk pdf', reinforcing the lure. No scripts were extracted, but the presence of multiple external links, including a malicious redirector, is sufficient evidence for this assessment.

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=loan+agreement+template+uk+pdf
    • http://files.davideweed.com/uploads/1/3/1/3/131381679/tomejawux.pdf
    • http://files.mibelting.com/uploads/1/3/0/9/130969986/nufepagukero.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/add_repo_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/vejaneg.pdf
    • https://cdn.shopify.com/s/files/1/0452/9124/1634/files/easy_christmas_carols_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1317/files/44948541195.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/wudov.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/17180033859.pdf
    • https://cdn.shopify.com/s/files/1/0455/7596/2789/files/65421306450.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/tuvokobuxafiwebutiku.pdf
    • https://cdn.shopify.com/s/files/1/0439/3077/9816/files/81655982850.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/fedufurudijedib.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/58555159085.pdf
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/3949487238.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/jeserimijis.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_off00006773.bin
858bbcdf3d21651baa087aabfd45b3b771d21ae605e51e8b160adb053e6b2447
pdf-font-stream PDF embedded font (sfnt) at offset 0x6773 5020 bytes
font_01_sfnt_off00007876.bin
5a7b08d80aa3bae82c801bc5fde1ad16c29dea871baf4c705c1346bf3734417c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10880 bytes
font_02_sfnt_off00009cd1.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD1 4324 bytes