Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02be8ed4e4b3afd…

MALICIOUS

PDF

35.5 KB Created: 2020-08-08 23:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c442ded41b25883714b8eb53c76ed6dc SHA-1: b96a5d59b75cdd017e32b545cc9dcc4d649e74c0 SHA-256: a02be8ed4e4b3afdebbfa9c1e585e6e49f10e1cb12aec8052c70733d155d7907
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This indicates the document is designed to trick users into visiting a malicious site by presenting a seemingly legitimate download link. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=theory+of+alternating+current+machinery+alexander+langsdorf+pdf+free+download
    • http://files.alpinedesignsmt.com/uploads/1/3/0/7/130776368/dogipasero-wawusumi.pdf
    • http://files.acrylicdreams.com/uploads/1/3/0/8/130813668/gutilixozewamu.pdf
    • http://files.starprairielandtrust.org/uploads/1/3/2/6/132695200/lumugaloloriz-mebalused-jafib-dibuzidekesej.pdf
    • http://files.eghsbandboosters.com/uploads/1/3/1/3/131384679/mutedij.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/dining_philosopher_java.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/5707196780.pdf
    • https://cdn.shopify.com/s/files/1/0438/8156/2280/files/lajawopivugipogat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pezudatilekubad.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7188/files/zulubefabewagasika.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/gevadadovabonuxukuvupuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/zoxatixodafowifut.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/38196232899.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/4921514353.pdf
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/4_hour_work_week_full.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_off0000495f.bin
beeb03472c35e645c7caf4aa30de34b6144119d6ad4a4fb627765933b39ef1cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x495F 5780 bytes
font_01_sfnt_off00005d06.bin
15e1969ab203e592897ff19bcb3c22162dccce503db5d6622ae0d05365d92531		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 10428 bytes

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