Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ccc7a907e6eb96…

MALICIOUS

PDF

34.0 KB Created: 2020-08-06 18:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f9608e9902fad5a3c616a1c31055144 SHA-1: 200534bfa7bfec163b75ab8a00cfc7b4436fa570 SHA-256: 68ccc7a907e6eb964c6c8cbd5b3cb5676a663a634cf7abefe2c58300f0ef857d
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One prominent link redirects to 'ttraff.com', a known malicious redirector, likely intended to lead the user to malicious content. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=ielts+band+9+vocabulary+secrets+pdf
    • http://files.carpetcleaningsummerland.com/uploads/1/3/1/3/131383657/9684649.pdf
    • http://files.lydiamccarthyart.com/uploads/1/3/0/7/130739522/mapegeriliredepubaj.pdf
    • http://pagifu.rosserwoodlandsrec.com/uploads/1/3/0/9/130969204/kutazi.pdf
    • http://files.supportingpresence.com.au/uploads/1/3/0/7/130738548/8d04f5872646258.pdf
    • http://files.looneymoons.com/uploads/1/3/1/4/131452842/a97641521c030b4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/70412840475.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72966212333.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/zibelutagokatonobogipub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/zixomalujen.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/xizenasoripanasux.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/36017906462.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/wuxujirokozevasofuvu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3212/files/70764478475.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/nerafotep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8694/6206/files/xulurosivitujiwomasoxipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.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_off00004881.bin
1ccf9b43245659606bc010a452a5d8f04fd6d453d9d7bf19ee1ffdda6f0201b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4881 5544 bytes
font_01_sfnt_off00005b6f.bin
31aef6b34b1b222da1f8406ec0180706402ecce51b8ef0edbd06eafeab00a87e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6F 9348 bytes

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