Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a2f4737ab8bf23…

MALICIOUS

PDF

56.7 KB Created: 2020-08-01 15:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1b6d1d8a9b741020fd113adc909d9eb SHA-1: 76412a0df9e8782398909b17deea58d1bd0b000b SHA-256: 96a2f4737ab8bf23cfadcb255d9ef7ecb222c73971be2239e7ccc5da2522018e
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=poke+radar+not+working'. Additionally, it hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or traffic redirection. The ML classifier strongly flagged this PDF as malicious. The document body contains the malicious URL and references to 'Poke radar not working', indicating a lure to entice clicks.

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.cc/pify?keyword=poke+radar+not+working
    • http://files.abovethecoals.com/uploads/1/3/1/8/131856706/tapiboronirewub-wakusali-xawemonerurumij-lanujaka.pdf
    • http://files.oursavinggrace.co.uk/uploads/1/3/1/8/131856498/8cadd82d2a0a5.pdf
    • http://files.just-beachy.com/uploads/1/3/0/7/130775795/bajosor-xisiripepilizas-rufuzagubomi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/83081058094.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/72380768458.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/fulolilezepuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/8658/3710/files/76373936290.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9309/files/suwelemepozixabawowaraxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/97861116244.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/zamagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7778/0134/files/ketififavokefuvugokuni.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/bevebozajejikewix.pdf
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/4680173770.pdf
    • https://cdn.shopify.com/s/files/1/0433/0074/9467/files/rozozimorulomolizunev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/22368055188.pdf
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/divuzaserok.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_off00009358.bin
29ac8462138460dbfc5c3d1e07e40fee00817c126d53aae18449b724c772e587		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9358 4940 bytes
font_01_sfnt_off0000a44d.bin
5ba75132946dd24a7d1b2dc5674791895e3fc4a22a56e3cae8f8660a65ea6c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA44D 16048 bytes

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