Malicious PDF — malware analysis report

Static analysis result for SHA-256 144be8d7286214bd…

MALICIOUS

PDF

48.6 KB Created: 2020-08-04 09:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 221202afedfb320ab073a0b41ed90bf8 SHA-1: c3b18391571f6764382c99eb340acaf81a76b8c5 SHA-256: 144be8d7286214bd70ea31fe099b241fa892281cc9fe533020c060ac1457a63e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, https://ttraff.ru/pify?keyword=bangladesh+passport+reissue+form+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a passport form, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links further indicates a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=bangladesh+passport+reissue+form+pdf
    • http://files.ricardosiller.com/uploads/1/3/2/6/132682822/rexivifeduwux.pdf
    • http://files.cvhs-bands.com/uploads/1/3/2/6/132682806/644423.pdf
    • http://files.sridevi.org/uploads/1/3/0/7/130738771/funezebekel-xefebubikeniz.pdf
    • http://files.unionchapelmonroe.com/uploads/1/3/1/6/131607053/ad2c4f603709f4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/rizikowuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/koxasukuromiwowoso.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/jetebifuji.pdf
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/cdisc_sdtm_implementation_guide_3._3.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/8944/4510/files/nuzapifoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/4966864763.pdf
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/44340705722.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/61280015363.pdf
    • https://cdn.shopify.com/s/files/1/0429/0438/7750/files/mitegowomelelasebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/xizadibotomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/botikopajadedijefatodojok.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_off00007cc6.bin
b2459f422c613b055c618f570c72b6ec41ab337864815be1ec13f2b01766ee15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 5504 bytes
font_01_sfnt_off00008f57.bin
460754cce6e9597036dc407bbb8a11e51923d60433b7bcf9db9bdfc7cbeb052f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F57 11224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.