Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8ffa1890776052…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 23:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b23aaee81247bacb0c35e80eebd3121c SHA-1: 45bae137ab34f0379fcdedf9c588e9ab0f7c6ce1 SHA-256: dc8ffa1890776052d3cfd87a3153b4494c7b567a671ca0fa518e60facdc14933
128 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 pointing to 'https://ttraff.com/pify?keyword=lagu+lily+remix+dj+opus'. Additionally, it exhibits a link farm pattern with numerous external PDF links, many hosted on Shopify. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking these links. No scripts were extracted, but the combination of the malicious redirector and link farm indicates a campaign likely aimed at phishing or malware distribution.

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=lagu+lily+remix+dj+opus
    • http://widobowu.camco-stores.com/uploads/1/3/0/8/130813592/8732599.pdf
    • http://files.theheartexhibit.org/uploads/1/3/2/6/132682934/lizugipapoju.pdf
    • http://files.busybeespannal.org/uploads/1/3/0/8/130814339/goravurinif_nefesim_dovoxavidivili_ruxikatekezula.pdf
    • http://zimosusi.homelessheaven.com/uploads/1/3/1/3/131381428/vusukogete_jedizeg_getosobugufuwaw.pdf
    • http://files.kadoyle.com/uploads/1/3/1/4/131438155/9433522.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/43042573569.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ranugebiwuzejivuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0449/9813/1880/files/barron_s_gre_21st_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/betubeveboxif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1284/8790/files/genamuzuzode.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/termn_odevzdn_bakalsk_prce_upol.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/30068037835.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/excel_list_worksheet_names_in_cells_vba.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6527/files/piping_isometric_drawing_tutorial.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_off00004e85.bin
0042c01074eec15df20af4c2ea41a225dfd309c6d62848e64053b42645385ec5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E85 5464 bytes
font_01_sfnt_off00006118.bin
b88b8c28454bc3a33e660c7e256b8c4f40c309e0b70a3c042159e07b27f45b8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 12200 bytes
font_02_sfnt_off000087b8.bin
f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x87B8 16204 bytes