Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7bbf2ff1ada7d9…

MALICIOUS

PDF

46.6 KB Created: 2020-08-18 22:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04e17852c3ce9b51ccb09bc829a56477 SHA-1: 62c109b3beca2aa8866052af575f9d8f433f74fa SHA-256: 8f7bbf2ff1ada7d9645d70242abe56255c64d6bbde456cae20f4b73d6580f732
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a search result for 'Hanuman chalisa song telugu'. This indicates a phishing or social engineering attempt to direct the user to malicious content. The PDF also features a large number of external links, many hosted on shopify.com, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggest a malicious intent.

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.cc/pify?keyword=hanuman+chalisa+song++telugu
    • http://files.montereybaycaststone.com/uploads/1/3/1/4/131453252/800d4.pdf
    • http://zukapuja.xtabentum.com/uploads/1/3/1/3/131379877/1289635.pdf
    • http://files.lauracarolyn.com/uploads/1/3/0/8/130814644/rexozemivadon.pdf
    • http://files.encircledbirth.com/uploads/1/3/0/7/130739021/kejiban-nirizopadaso-dinigabiripinok.pdf
    • http://mopik.purpletigergonewild.com/uploads/1/3/2/8/132814930/868666adcc1cd.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/sogiluwuzawajezeju.pdf
    • https://cdn.shopify.com/s/files/1/0435/7344/4771/files/abu_rayhan_audio_gojol.pdf
    • https://cdn.shopify.com/s/files/1/0438/5934/5573/files/digidifumozarulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/lirobubif.pdf
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/payback_period_example_problems.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/naturumigir.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/february_2020_calendar_kalnirnay.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/49025188897.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/13097913931.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/pupatedeku.pdf
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/susipenofad.pdf
    • https://cdn.shopify.com/s/files/1/0434/9175/4149/files/letter_writing_worksheets_for_grade_6.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654c.bin
2f8a8d311d6d7551ab03d4a2e0ae61f9fcbe29ee62f2d2cd4c158982117a738a
pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 4960 bytes
font_01_sfnt_off000075f5.bin
47fbe86c4a70482478638e265a485a2c885380c7b5e391a39b667b135a46cda6
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F5 12972 bytes
font_02_sfnt_off00009f63.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F63 4324 bytes