Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b77b271f7ff9c6…

MALICIOUS

PDF

53.3 KB Created: 2020-08-20 18:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c11689b3f6f14de07ac2d8589c186d3 SHA-1: d3384dfe355922184c7b13eeff3e2d9a2ccf8c92 SHA-256: d9b77b271f7ff9c6ffe53e8ed711b0941db08e962f2a966cb3024eaa35f5e857
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=dark+souls+3+sorcerer+build+guide'. The document body, though partially corrupted, suggests a lure related to a 'Dark Souls 3 sorcerer build guide', aiming to entice users to click the malicious link. The presence of multiple Shopify-hosted PDF links further supports the SEO link farm heuristic.

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=dark+souls+3+sorcerer+build+guide
    • http://files.auroraarearetiredteachersassociation.org/uploads/1/3/2/6/132681647/ba24b1f7d6e985e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0437/0671/2219/files/crimson_peak_movie_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/dadobufewoxomukamoju.pdf
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/nz_motor_caravan_association.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/60412461081.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7473/files/51349008829.pdf
    • https://cdn.shopify.com/s/files/1/0453/2440/2843/files/11879194204.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/soul_vessel_hollow_knight.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/fajofukiwewifutofibaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/8087/4139/files/quotations_from_chairman_mao_tse_tung_download.pdf
    • https://cdn.shopify.com/s/files/1/0459/1665/1669/files/adi_buddha_mandala_mantra_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/bolizupofov.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_off00009350.bin
15bcbbf249d00c77e6e67368a6bd5b441e15e5f51be6e0ad4dd6e03676042163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9350 5476 bytes
font_01_sfnt_off0000a5f6.bin
6776de8f33a671c678a75bf1c15faa5967de72c4d147a95ecb820788625f9898		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F6 10140 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.