Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20845bde9d4732b…

MALICIOUS

PDF

48.8 KB Created: 2020-08-19 15:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 038a655e54f15af655403fb392d0e9bc SHA-1: 568b376899333cde6104da1728d17fad50294421 SHA-256: f20845bde9d4732b9fc5832aad6c9a7ebb35eec42a9b0818199cadb1ca979f4a
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Adobe photoshop hair brushes' and a URL that matches the redirector. This suggests a social engineering lure to trick users into visiting a malicious site, likely for further payload delivery or phishing. The presence of a 'download button' heuristic reinforces this attack pattern.

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=adobe+photoshop+hair+brushes
    • http://meburano.nairnsphotos.com/uploads/1/3/0/9/130969904/famop.pdf
    • http://kuvik.donboscoyouthincubator.net/uploads/1/3/2/7/132740541/514a364cd3d805a.pdf
    • http://files.jnrcru.org/uploads/1/3/0/7/130776263/nopufisewokanenovu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/18190758369.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/bezixixisaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/lapubomozasigerimasemis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/5342082796.pdf
    • https://cdn.shopify.com/s/files/1/0432/2987/2292/files/83199537598.pdf
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/careless_whisper_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/20204873344.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/78858258241.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/6124842281.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2799/files/nuzodalanabinulediweg.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/west_virginia_university_physics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/counter_strike_xbox_one.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/morgan_olson_parts.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_off000074b3.bin
37106c800a3ffb402a94d55092ec7fe4fe76cc11b264293e558c353f3257d91e
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 4920 bytes
font_01_sfnt_off0000857c.bin
db85e5c8e5ecc5cf62f5bfd1153e3a38e5bb9b154415c905db008bfa126ddb4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10088 bytes
font_02_sfnt_off0000a7fc.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FC 4324 bytes