Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b487a9bd1f89335…

MALICIOUS

PDF

39.8 KB Created: 2020-08-20 01:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 597652e6bfb2a2f04bd6270bae4178af SHA-1: 689a5d604ff2295c2b48fc4bb78dd7b490ce124b SHA-256: 3b487a9bd1f893352c0ae33d1f1c0493cdac5f01b4382928bcfa9e46d39d6939
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for "Fema ics 100 c answers quizlet". This suggests a phishing or social engineering attack aiming to redirect the user to malicious content. The PDF also hosts a large number of external links, many pointing to shopify.com, which is characteristic of SEO link farm abuse. No scripts were extracted from this sample.

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=fema+ics+100+c+answers+quizlet
    • http://files.artscapewynyard.com/uploads/1/3/1/3/131380687/telifigop.pdf
    • http://files.browsmith.com/uploads/1/3/1/4/131455398/bivalewuzajubiwe.pdf
    • http://fuwowuxok.elatell.com/uploads/1/3/1/4/131437044/9585177.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/romaperakon.pdf
    • https://cdn.shopify.com/s/files/1/0445/6975/5812/files/carcassonne_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/mejewerulikobonowiwan.pdf
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/lasepulagisep.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/35007676225.pdf
    • https://cdn.shopify.com/s/files/1/0463/0960/5541/files/christmas_gift_card_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/63639373108.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/5163680675.pdf
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/cellular_respiration_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/6032/9637/files/odisha_reporter_jilla.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/72305250122.pdf
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/24766488256.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_off00005e4d.bin
83db06da42f71b10d00f7026e46f86649e51d74a7025966092bef16fd5ee1299		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4D 5360 bytes
font_01_sfnt_off0000708a.bin
dfc5f6eecf313204e5dcd9ca75661a27e73dcb85c678c789504440a15400f79f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 9984 bytes

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