Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c764872bb556513…

MALICIOUS

PDF

48.9 KB Created: 2020-08-29 19:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0fc5eade23bf1b083351c3865c6984a SHA-1: 11ca024a3f471db305d4758f624672f762b9ba9d SHA-256: 2c764872bb556513a9b8c642e265bbb8873ed46662708a50a3f71dac5394f3fe
150 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/wix?keyword=download+juveniles+2018+movie'. Additionally, it features a PDF link farm with numerous links, many hosted on cdn.shopify.com, suggesting a coordinated effort to distribute content. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be social engineering users into clicking the malicious link under the guise of movie downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=download+juveniles+2018+movie
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/kumavuxosorilufa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/darovamupidop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/rezajabenotuw.pdf
    • https://static.usrfiles.com/ugd/b8c837_20de3a8b3a7c429c996668ffc80d8e8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf1d3b3c9dd942bebb994c58f31876c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_020fe300be4e4cbbadafe8ae2b3033d0.pdf
    • https://cdn.shopify.com/s/files/1/0436/2856/0547/files/97081665674.pdf
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/83500438840.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/types_of_cattle_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/gnss_vs_gps.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/potassium_replacement_iv_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/jepivemupimidilebolajo.pdf
    • https://cdn.shopify.com/s/files/1/0461/3868/7641/files/pokemon_breeding_guide_ultra_moon.pdf
    • https://cdn.shopify.com/s/files/1/0462/4731/3557/files/vidmate_app_new_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/wokelikasasititewax.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_off00007ee1.bin
e3d9adcdbb8cda469218ea376222bd873bce4818718b1f3bf05e5b7235f7b633
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 5624 bytes
font_01_sfnt_off0000920c.bin
34ff8014abb2e90bc211388949bb2867653778b8d3182a0cafa0b4dc633491d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x920C 10780 bytes