Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba17e625a4e81f3…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 14:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3052bd3bc9cc4e948aba6e58a7591cc4 SHA-1: e7cf8e58bbe7872b9ccce5475121c18c29e3a5e4 SHA-256: fba17e625a4e81f39efb10938778744e5e681f40dca9740c1cd1f3835dc697e0
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body and embedded links suggest a lure for a "flight pilot simulator 3d free hack apk", which ultimately redirects to the malicious URL. The presence of numerous links, many pointing to Shopify, suggests a link farm used for SEO poisoning to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=flight+pilot+simulator+3d+free+hack+apk
    • http://files.familyfunzone.com/uploads/1/3/1/0/131070867/f9e3217.pdf
    • http://files.maraamdwidar.com/uploads/1/3/0/7/130775032/8590802.pdf
    • http://files.jessicaleemanton.com/uploads/1/3/0/9/130969300/dafipapamipewezam.pdf
    • http://gokowa.houseofhoneybeewigs.com/uploads/1/3/0/8/130814328/baniluwovama-kanolodemaput-bugubeduvamuw-wojezemorut.pdf
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/xibunem.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/xexemuxobajekinodote.pdf
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/blending_in_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7164/3554/files/jetumibavak.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/3010/files/maxwell_maltz_psycho_cybernetics.pdf
    • https://cdn.shopify.com/s/files/1/0434/6032/9637/files/kukerugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/treatment_of_malaria_in_first_trimester_of_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1238/files/60465198168.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/87053474676.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_off00005b7d.bin
592791d19b3666a2712549588bca1c768dd59d4482f909e163e206e97eb17567
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7D 5752 bytes
font_01_sfnt_off00006ef0.bin
4d83dc5402e8bbadcbb0eb3c567f1aa168aae3c9c3eb4a3ac55243c5efaeb1f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 10128 bytes
font_02_sfnt_off000091ed.bin
ab862ddcc36e5f8abbcc0ec12f45ee2a0a0017beba85073a80867d3ee452b16b
pdf-font-stream PDF embedded font (sfnt) at offset 0x91ED 16160 bytes