Malicious PDF — malware analysis report

Static analysis result for SHA-256 42df195e71efe5b5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-27 23:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ae4bcf24d5a1269adbde7c2f326e7a5 SHA-1: 52dcbfd562e256c64cb65ad9bb522ca3f0402af7 SHA-256: 42df195e71efe5b593904046100eb313bf85749902ac9f1f5dd2f369953d7865
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=grille+bataille+navale+vierge'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The document body, though partially corrupted, also contains the primary malicious URL and several benign-looking PDF links, reinforcing the lure strategy.

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=grille+bataille+navale+vierge
    • http://zojelowa.jerseybluedar.org/uploads/1/3/1/4/131407312/xipuwinav.pdf
    • http://files.brettdickdpt.com/uploads/1/3/0/9/130969727/kekumoje.pdf
    • http://kidawumu.angaaefonu.net/uploads/1/3/1/0/131070374/3723996.pdf
    • http://gowuxasa.suisunvalleyfillingstation.com/uploads/1/3/1/4/131483830/wejibugare.pdf
    • http://files.rurallifeatkenyon.com/uploads/1/3/1/4/131454586/1428445.pdf
    • https://cdn.shopify.com/s/files/1/0462/6645/0074/files/10038994866.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/1-_99_construction_guide_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/xozemexifuxapid.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/bibiroguxisigexel.pdf
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/tilarajemazasexixuvanem.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0762/files/headway_beginner_cd.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/98354736922.pdf
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/free_download_mathematics_books_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7130/files/20300292454.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/dodurev.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/35998048182.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_off0000509e.bin
fec03369dd488f96ff53e6b3ae4839f75d9c40fbc02978aef14a338b9041f3f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x509E 4908 bytes
font_01_sfnt_off00006165.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x6165 1800 bytes
font_02_sfnt_off000069f2.bin
2d1cf107f23b424be76b4c31f106a9551e4c3e73cf51a3769509d7d56d927a37
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F2 10924 bytes