Malicious PDF — malware analysis report

Static analysis result for SHA-256 df20ea4972f00a27…

MALICIOUS

PDF

50.2 KB Created: 2020-08-06 13:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2540fc78627947105bf8e314298ceb7e SHA-1: 6c1bdc9b00db6397427f96d170e1b14856190fa4 SHA-256: df20ea4972f00a2710c4fc86eeacb5e182b59975d6c493af06aa507e0e7fff18
142 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.cc', suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=abnormal+psychology+pdf+9th', indicating a lure to download a PDF related to abnormal psychology. The presence of numerous Shopify-hosted PDF links further supports the link farm heuristic.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=abnormal+psychology+pdf+9th
    • http://jigilu.jasontabit.com/uploads/1/3/0/8/130814328/tilapetuj.pdf
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdf
    • http://files.srinivasan.co.uk/uploads/1/3/1/3/131379540/bc6a3cb5a456.pdf
    • http://files.jessicageoff.com/uploads/1/3/1/4/131454492/9f82ebe.pdf
    • http://files.familiarstrangers.info/uploads/1/3/0/7/130775707/fipaka-feworidewerot-jojaguzufenan-nuloropetu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/employee_write_up_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/dorefetavemogad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42386580717.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/zigovekew.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/5724012988.pdf
    • https://cdn.shopify.com/s/files/1/0437/2122/8440/files/addict_with_a_pen_piano.pdf
    • https://cdn.shopify.com/s/files/1/0443/8360/0806/files/anarcho_syndicalism.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/59265577169.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8989/files/diablo_3_cheats_xbox_one.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/pigedaxowazisuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/wasorukagumazubapubufutum.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_off000080d1.bin
aef6696bc91864bd7294d16f313bf9cafc4ab60dc3ef0e35108b0f1000418ce4
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D1 5956 bytes
font_01_sfnt_off000094ec.bin
df10d687673869abf6d0c3b33383b45e1b3ece0655f69d722426e45fea3cb371
pdf-font-stream PDF embedded font (sfnt) at offset 0x94EC 10968 bytes