Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a455a4beddd7ec…

MALICIOUS

PDF

58.5 KB Created: 2020-08-26 02:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dc3608c920b685d78865669ad3559d1 SHA-1: fbb62b29b422d1690d62b04295da9865ddb363cc SHA-256: 79a455a4beddd7ec2c6f26641f7bf8a41b87c3b63fdcc3155fe9339c777be956
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=according+to+abraham+maslow+our+primary+source+of+motivation+is'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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=according+to+abraham+maslow+our+primary+source+of+motivation+is
    • http://files.rachelliesphotography.com/uploads/1/3/0/7/130776656/43f00a80125.pdf
    • http://xejosoril.scripted-joy.com/uploads/1/3/2/6/132680813/jobekodopatof.pdf
    • https://cdn.shopify.com/s/files/1/0428/4402/9084/files/judatuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/nugorezitufizakulaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/wisesegiworul.pdf
    • https://cdn.shopify.com/s/files/1/0440/3114/8197/files/convert_newer_autocad_to_older_versi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/baadshah_1999_hd_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2072/files/cv_for_teacher_job.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/apush_chapter_6-_8_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4880/files/renuborak.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/ruxuru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/19992837561.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/bullwhip_days_the_slaves_remember.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/angel_lyrics_theory_of_a_deadman.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/files/1/0428/4402/9084/files/judatu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2b3.bin
fa12d0a7e35f97a3d8fdbc5274d5835cef3ac9454dd2345d943c6bf0e20fb70f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B3 5952 bytes
font_01_sfnt_off0000b6d9.bin
6b717a59289795fed00339025a6db0c2f07fd2db38e1c7d736a5a8cf7274cf7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D9 11300 bytes

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