Malicious PDF — malware analysis report

Static analysis result for SHA-256 47280083b05a594a…

MALICIOUS

PDF

60.2 KB Created: 2020-09-01 04:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4918f6572f8ad8d78dcd30aa2b1157b SHA-1: cdb5a3cb523ec6375ac3320dac5fb87f059ae3fb SHA-256: 47280083b05a594a27c5d72e004aa853877d0373281643771effe7d47b8fdfb5
152 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Metformin pcos weight loss dosage', suggesting a lure to a scam or phishing site. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links.

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=metformin+pcos+weight+loss+dosage
    • https://static.usrfiles.com/ugd/ef253e_f37beb681e074baaa5f7f2e0eddb3260.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccdd99dee19742eaaccc7bd74fa3b04f.pdf
    • https://static.usrfiles.com/ugd/77941b_8f8586c8f6a0451da47886fcf865164f.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8609/files/mepugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/characteristics_of_living_and_nonliving_things.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/68392604150.pdf
    • https://cdn.shopify.com/s/files/1/0465/3269/0070/files/bapapagiguk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/libinikupuwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/ximuwoku.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/fufisunoko.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_off00009f4a.bin
eca6c136fe0ad1380b368fbbe1ce39795f60ef0828972193acef0dbf6e9b98c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4A 5456 bytes
font_01_sfnt_off0000b1c0.bin
36c68b5a9733a8911315e1a7275f98a979c8f8feb74aded0b09a120182674a19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C0 10572 bytes
font_02_sfnt_off0000d5f5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F5 4324 bytes

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