Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b19ae7ce3c64c65…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 19:39:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c51dd536d636146b9db3640532ea67e SHA-1: d6794f36615c30a135644862d6849632a8d4d035 SHA-256: 7b19ae7ce3c64c6593f6df177b5f930acce711ee258ca4b123f1014ed39ccd9d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body text mentions 'A4988 stepper motor driver datasheet pdf', suggesting a lure to trick users into downloading malicious content. The primary malicious IOC is the redirector URL, which likely leads to further compromise.

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.cc/pify?keyword=a4988+stepper+motor+driver+datasheet+pdf
    • http://regafir.xxx-aliantha.com/uploads/1/3/1/3/131380107/gibel_fuligesogomi_kiwuvoregifa.pdf
    • http://guwovat.gbmin.org/uploads/1/3/1/3/131380429/4846259.pdf
    • http://files.thenatureofthecosmos.com/uploads/1/3/2/6/132696233/2934437cbb0.pdf
    • http://files.jdmwebsitedesign.com/uploads/1/3/0/7/130775970/gevizaxina.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/44573989410.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/89378565270.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/nasadesawur.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/37480382747.pdf
    • https://cdn.shopify.com/s/files/1/0430/7137/3466/files/medical_surgical_nursing_lewis_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/wumokazabigokenilexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/watch_attack_on_titan_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/3857924664.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/86510141912.pdf
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/adalimumab_prescribing_information.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_off00006652.bin
3ac4b96f6924dbfe4e466d9ffcf8fc176cbc1f857770eccd6930a9ed30075ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6652 5736 bytes
font_01_sfnt_off000079ba.bin
c38cfcf3bf024cd039310c275b714730316f2d68b6bbc59bceb834313656f464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BA 10172 bytes

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