Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b93edd2cc133e6…

MALICIOUS

PDF

56.0 KB Created: 2020-08-07 14:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 047548ce3500e978f8dc76b5c0c2d9a1 SHA-1: b75dc2d70274a366956502710d766a65f1b26a2c SHA-256: b1b93edd2cc133e6c832b2fea183426e0c0471a9593d43d557a5c187693b64f2
150 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure for a 'genius book pdf'. The primary malicious link, 'https://ttraff.ru/pify?keyword=bring+up+genius+book+pdf', is designed to lead users to potentially harmful content. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=bring+up+genius+book+pdf
    • http://files.elginartsassociation.com/uploads/1/3/1/3/131384070/9bd86dfbd406.pdf
    • http://files.abfabescapes.com/uploads/1/3/1/3/131379894/lejelasig.pdf
    • http://wunawunik.timnordphoto.net/uploads/1/3/0/8/130813834/fumirutub-xesozumojonim-dibuwigaduv.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/78110106488.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/zifabotamekupopuki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0055/files/seluxamudagupegetufemefo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/39089268739.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/21621434203.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/causative_verbs_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/xibagilulabazoveza.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/lojaranumosazefuxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/11192353902.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/makajarufodomewiwade.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/virakivifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/nexezewokedawajedafeku.pdf
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/31674178568.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/
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008db5.bin
435d7ff96e657807e7027906db7c75900aa6ebf1cda25db7acddd70d3bb6a929
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB5 5024 bytes
font_01_sfnt_off00009ec5.bin
c22e22d2faf704dffa051e2d018373cbbff07021fb4f20564b2091dc09e5d12a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC5 11548 bytes
font_02_sfnt_off0000c49b.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC49B 4324 bytes