Malicious PDF — malware analysis report

Static analysis result for SHA-256 4653eaeccd9cd439…

MALICIOUS

PDF

62.8 KB Created: 2020-08-17 14:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2fae39b0e0abc9126baa3b7a6fd25f0 SHA-1: d8e7abea1d4ae54d80a98b0c3072f98c10cbdbe3 SHA-256: 4653eaeccd9cd439877d601ee8bceae87ccbcbbe8259a2e7b8868cc52187bc4a
140 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that, combined with the heuristic 'SE_CALLBACK_LURE', suggests a callback phishing or tech-support scam pretext. The primary malicious URL is https://ttraff.cc/pify?keyword=lp+bblr+pada+bayi+pdf, which is likely used to redirect users to further malicious content. The presence of a link farm also indicates an attempt to artificially boost search engine rankings for malicious content.

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=lp+bblr+pada+bayi+pdf
    • http://kaxovuba.love-your-mind.com/uploads/1/3/1/0/131070872/67b89ef.pdf
    • http://files.learningcafe.us/uploads/1/3/2/6/132696500/2709460.pdf
    • http://files.shimritlee.com/uploads/1/3/1/4/131437775/batanofe_bajijakaku_lulenafedokeso_bimapetivizin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9285/files/sugakajurigilakirefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4760/files/2803943033.pdf
    • https://cdn.shopify.com/s/files/1/0437/4590/2746/files/9148895825.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/cost_and_management_accounting_multiple_choice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0193/8079/files/entrepreneurial_finance_leach.pdf
    • https://cdn.shopify.com/s/files/1/0435/8445/4817/files/kadilet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/52035065888.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/dinag.pdf
    • https://cdn.shopify.com/s/files/1/0432/1797/7504/files/blender_2._79_reference_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/7297225014.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_off0000ae85.bin
28faff9dbb520ceb31783a616662122142d08de5c5b64b96c05b0f45ceabd0be
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 4416 bytes
font_01_sfnt_off0000bd80.bin
d676ba3ffd98f201b0b21ce54e763373e09226692932b2b7a97e0f91a9aa711d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD80 10140 bytes
font_02_sfnt_off0000e025.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xE025 4324 bytes