Malicious PDF — malware analysis report

Static analysis result for SHA-256 892e210197d6bb27…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 12:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb710b945a3b7b2d5be945f95b8b2f08 SHA-1: c769759039d6104e303ea75f091ad239e878a8a4 SHA-256: 892e210197d6bb276f55a6447f24d1147c7ac4613a92c44f3c91fd56ccf1d4fc
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=adm+pro+apk+mod'. Another critical heuristic identified a large number of external PDF links, suggesting a link farm for SEO poisoning or traffic generation. The presence of a 'download button' lure further supports the malicious intent of directing users to external, potentially harmful, content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=adm+pro+apk+mod
    • http://pobixiv.boiseimagehealthservices.com/uploads/1/3/2/6/132682035/maraxul-sigonukosa.pdf
    • http://files.meganalms.com/uploads/1/3/1/4/131406744/naxutoworo.pdf
    • http://files.thechurchinakron.org/uploads/1/3/0/7/130738710/d9a0d0ee54e1b.pdf
    • http://files.finewillrockthehouse.com/uploads/1/3/0/7/130775129/peresi.pdf
    • http://poborekor.hackenthorpelodge.org/uploads/1/3/2/3/132302936/pexawupos_lemejulabulako_zugosedexog_zapodederov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/draw_me_nearer_meredith_andrews_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/6246727799.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/21181857949.pdf
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/candidiasis_ppt_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/4433/7824/files/asme_bpvc_2019_changes.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/59678241641.pdf
    • https://cdn.shopify.com/s/files/1/0432/5883/9203/files/vuvunirowasit.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/minecraft_kj_to_rf.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3586/files/13649471296.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_off0000645f.bin
bbd78a72c42d83c2e5033adc0b52d0a5bfee9d1b245e6fc69a4814c3e2ad485b
pdf-font-stream PDF embedded font (sfnt) at offset 0x645F 4948 bytes
font_01_sfnt_off0000751e.bin
9fa48db988549cf3bb2de7a3d73353affa3ad464df9bb174e68d3c991fe515ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 10588 bytes