Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f142ca22c00574…

MALICIOUS

PDF

61.9 KB Created: 2020-08-14 22:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecfe44c4e774813bef009b6b80f4d789 SHA-1: 066705c61582bc6b0ceec8d626caed0b2814d66a SHA-256: 18f142ca22c00574f9579dbe4ec3047022a1f47f49430ea2f1c89ad8e2cba9ed
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs, one of which, https://ttraff.cc/pify?keyword=destiny+2+forsaken+last+wish+raid+guide, is flagged as a malicious redirector. The document body also contains numerous links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector points to a phishing or scam attempt.

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.cc/pify?keyword=destiny+2+forsaken+last+wish+raid+guide
    • http://files.coladoart.com/uploads/1/3/0/7/130739489/pamebixuvo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/tomelonifiwili.pdf
    • https://cdn.shopify.com/s/files/1/0433/2155/7150/files/signs_and_symptoms_of_diarrhea.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/dimefawivenolofukagep.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/13918679148.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/feboruwojidujede.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/diwolexivofapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5332/5215/files/clinical_anesthesia_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/1434/7160/files/dexibejerutibojub.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/57687645977.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/80380063920.pdf
    • https://cdn.shopify.com/s/files/1/0434/8857/5638/files/woxubetedopiruzibefinoke.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/47530213199.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6d0.bin
9831f6b2f36475b7c88c1cc65ed85d6eb5f1b8c2a2c4d997ce2f520eb3fed536		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D0 5440 bytes
font_01_sfnt_off0000b960.bin
3551ac4286824bd0022646b6feb45b30dc5a21a3125efd9df03b8befc1bbb13c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB960 10316 bytes
font_02_sfnt_off0000dc91.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC91 4324 bytes

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