Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae89206c307aa191…

MALICIOUS

PDF

44.8 KB Created: 2020-08-05 10:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07bd9b29cabfe5feb6badaa608de5515 SHA-1: 8a5c633a344e9be02474ac2911ade13d2c976869 SHA-256: ae89206c307aa191a487524fb9073a46fa3c5a084f1217ea9fe4d1f083d4edbe
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Carrabba s menu with prices pdf' and includes the primary malicious URL. The presence of a link farm suggests an attempt to manipulate search engine results to distribute malicious content.

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/pify?keyword=carrabba+s+menu+with+prices+pdf
    • http://files.beetdiggerwrestling.com/uploads/1/3/1/4/131438260/4386799.pdf
    • http://files.everythinghasapriceproject.com/uploads/1/3/0/7/130775145/9ddc24b8014.pdf
    • http://files.teadrunktailor.com/uploads/1/3/0/9/130969966/zimozijiras.pdf
    • http://files.rojosiena.org/uploads/1/3/1/8/131871852/9765122.pdf
    • http://files.natashagraddick.com/uploads/1/3/1/3/131383727/163f6e7470a.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/slavery_in_the_united_states.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/13495578094.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zafitizeruzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/sesezibaxojagizanurewumel.pdf
    • https://cdn.shopify.com/s/files/1/0432/9177/1046/files/71373615347.pdf
    • https://cdn.shopify.com/s/files/1/0435/8239/0431/files/porufalelavugozuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/butchery_business_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/91988784900.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/wowojazalilan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/7514015335.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/94980849518.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/gstreamer_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/26358994037.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_off000066dc.bin
baae48816f0a148d326dec808ae92a2e6d3d7e3aaaad1e1075c9902df32c8eb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DC 5500 bytes
font_01_sfnt_off00007974.bin
6df412c8f750a465297c64aecc0db417e18c9f208f19f453c0f605b0605c216c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7974 14360 bytes

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