Malicious PDF — malware analysis report

Static analysis result for SHA-256 12deb235754e0ced…

MALICIOUS

PDF

46.0 KB Created: 2020-07-29 16:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fad6ed22e5f80c62c3abdb2e67f6b8d SHA-1: 26c9b6d57513a4bc26cab77456453adb0477640c SHA-256: 12deb235754e0ced1e8ca52627250cf11fa174ad915615cfdf34ce069e5ac26d
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, many pointing to Shopify, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=disney+world+animal+kingdom+map+2020+pdf'. The document body, though heavily obfuscated, contains text related to 'Disney world animal kingdom map 2020 pdf' and authoring information from wkhtmltopdf, indicating a potential lure for users searching for this content. No scripts were extracted, but the presence of numerous external links and the malicious redirector strongly suggests a phishing or spam campaign.

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/pify?keyword=disney+world+animal+kingdom+map+2020+pdf
    • http://files.amysteeleillustration.com/uploads/1/3/0/9/130969048/8476925.pdf
    • http://files.sathyasnetworks.com/uploads/1/3/1/4/131411596/811404.pdf
    • http://files.onpointgreatdanes.com/uploads/1/3/1/3/131384401/06492.pdf
    • http://files.traceyknapp.com/uploads/1/3/1/6/131637374/meximu_nokibidilog_zalirezetuset_salemorazojeson.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/55016077543.pdf
    • https://cdn.shopify.com/s/files/1/0433/8221/0725/files/jitoseremajad.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/86393937149.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/kajizasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/soralufobotidagasujeke.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/43845575120.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/dijozixunuroxuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/0052/9049/files/29732498555.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/mumupisaseruvisuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/zidedot.pdf
    • https://cdn.shopify.com/s/files/1/0437/3771/0744/files/buxakazenevaxaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/74481018299.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_off0000742e.bin
b213e8f138bd54ff7f8a7f194c8314cb565b0246ff2d2ab68e5bfc9b6670ca9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742E 5600 bytes
font_01_sfnt_off00008738.bin
7f4094aaae92364067994c1dd51c58dc540b2e8edf3e569c540c78164d63a3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8738 10464 bytes

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