Malicious PDF — malware analysis report

Static analysis result for SHA-256 852332db1cb07f02…

MALICIOUS

PDF

43.3 KB Created: 2020-08-31 04:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fae98e44efba693fa32292991c1b6c35 SHA-1: 0d6cd728552a1cca486cb556aba07756f1f414ed SHA-256: 852332db1cb07f027d5e7d8f129a9cdce66f52b489f90e581c96771192d975a1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link to a redirector URL, which is a common tactic for distributing malware or leading users to phishing sites. The document body, though heavily obfuscated, contains text related to 'beyblade burst rivals apk mod', suggesting a lure to download a game. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger effort to generate traffic through linked PDFs.

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.ru/wix?keyword=beyblade+burst+rivals+apk+mod
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/xepipofifijemozexafi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9893/0341/files/ielts_band_9_listening.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/miguzavum.pdf
    • https://static.usrfiles.com/ugd/ae059d_cd6726a201ee41258f7d0552d42797f7.pdf
    • https://static.usrfiles.com/ugd/55cc32_5b82b740f3d443bbaa58b8302f96f242.pdf
    • https://static.usrfiles.com/ugd/06497e_467efeab8bb24079a4dee60da78eac49.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/car_battery_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0437/5366/8769/files/new_museum_theory_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3295/files/danixirazesa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/19926497372.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/8288952312.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ef13d9d435b4c628b8478e9adf950c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c437f55576b48c3898710e97ac89d5b.pdf
    • https://static.usrfiles.com/ugd/e23fbb_a8991d97bab74628a98d91603599f6b1.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_off00005bd3.bin
0e6e79467bfd85dee496c5f3a3329c71efa3c6fa6c23a022dead9d93f65fcf78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 5296 bytes
font_01_sfnt_off00006de0.bin
97b17be7af435e13364daea52531427e6eacc0fbda491b18ec85d5721eda0471		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 10772 bytes
font_02_sfnt_off00009276.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9276 4324 bytes

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