Malicious PDF — malware analysis report

Static analysis result for SHA-256 0299d35d60351384…

MALICIOUS

PDF

66.6 KB Created: 2020-07-30 11:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e14f7254232755b6f324f60707ead3d SHA-1: 5f0fd0cff2e884278d4768e2f54dec6401eb69dd SHA-256: 0299d35d603513847c184b18d8f9bb554e2b2924d6085fd168014f52e0ed3720
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, many of which are algorithmically generated and point to potentially malicious infrastructure, including a known redirector at 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to 'magic password for attracting money', indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=parole+magique+pour+attirer+l+argent+pdf
    • http://files.perkinstiels.com/uploads/1/3/1/4/131437074/mulifo-zaxerovuketipa-diwujoluf-wogipimite.pdf
    • http://files.northhavenmainehistoricalsociety.org/uploads/1/3/1/1/131163712/81502bc88fbd96.pdf
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://files.rohopublishing.com/uploads/1/3/1/4/131437064/torotobifinasi-zusejekenewo-wugix-xajidisudejaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/nelemopepibikapaxibafiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1736/files/65415582864.pdf
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/83502424362.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/jimuzexemeveseberoru.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/77578183131.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/44906885508.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/xufivora.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/rufelafedukarape.pdf
    • https://cdn.shopify.com/s/files/1/0428/4956/6876/files/81761774760.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/43861797915.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/rejojuseretewilupene.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/motisupedutedipisofox.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/90821245726.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbbe.bin
ee6f1e9b0f96183a3615d6b5d7baeaade5587a131f94b578807ef84583187165		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBE 5192 bytes
font_01_sfnt_off0000cd40.bin
d18e923ef47cd94495d89d5b13f44f92269ce12fa7c302502da5ff8ed710e571		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD40 15260 bytes

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