Malicious PDF — malware analysis report

Static analysis result for SHA-256 008d7fc0933ca012…

MALICIOUS

PDF

50.4 KB Created: 2020-03-22 14:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b58ce77dd82026c48f0cb27a3a81f525 SHA-1: 1589a55bbf2780a672a13a733baf0285c32c0712 SHA-256: 008d7fc0933ca012b4337737d6eaa000db4d400a3f1be4c95a065bd50964b25b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links, characteristic of a link farm, designed to obscure malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://pyramid3mgt.com/uploads/1/3/0/7/130776201/130776201.html#que+es+el+metodo+de+investigacion+cualitativa
    • http://anorganizedadventure.com/uploads/1/3/0/6/130640072/bekenelefuda-sowumeboxi-modiroxive.pdf
    • http://armenian-bird-census.org/uploads/1/3/0/6/130604207/fe17dd9d169.pdf
    • http://amoshummus.com/uploads/1/3/0/7/130739059/manutat_tusegibobetop_sorurisanosavet.pdf
    • http://russellsquarepublishing.biz/uploads/1/3/0/7/130739263/d3f2e68fd8208d0.pdf
    • http://www.tinderforestnatureschool.com/uploads/1/3/0/5/130541209/2435055.pdf
    • http://honeyee.us/uploads/1/3/0/5/130588842/nuzolamibidanakivil.pdf
    • http://trippyprints.art/uploads/1/3/0/3/130313063/fabanipixazegako.pdf
    • http://raisedeadpeople.com/uploads/1/3/0/6/130622095/namumazezuveligomino.pdf
    • http://newhorizonswealth.com/uploads/1/3/0/7/130738542/pikeronidevutuwe.pdf
    • http://abmovinghauling.com/uploads/1/3/0/7/130775342/pabukuvosob-sojixina-nalizo-zisilumipuraxu.pdf
    • http://livegreenleaf.com/uploads/1/3/0/6/130604181/ziweduwunebo.pdf
    • http://kaydumedia.com/uploads/1/3/0/7/130738940/3688189.pdf
    • http://cpanel.angiek9trainer.com/uploads/1/3/0/8/130874325/47a48f76d7d1285.pdf
    • http://miltonrtrice.com/uploads/1/3/0/3/130313306/kiviseseg.pdf
    • http://playingitforward.net/uploads/1/3/0/7/130739275/pisesem_luzisomiritu.pdf
    • http://www.billyarthurphotography.com/uploads/1/3/0/6/130604523/10c24306dcd6.pdf
    • http://trileafoutdoors.com/uploads/1/3/0/2/130271126/pakowir.pdf
    • http://www.neqconsulting.com/uploads/1/3/0/5/130589123/pabekov-boxamoro-tobopulunam-sajoru.pdf
    • http://www.detectiveagenciesuk.com/uploads/1/3/0/4/130489157/wagipanavemub.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b22.bin
9d8dc6abc50a630fd0100b733dbfe7ebf7894b70f8a6f76becc5204e946cfcec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B22 9084 bytes
font_01_sfnt_off00009c3b.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3B 1708 bytes
font_02_sfnt_off0000a4a2.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A2 16036 bytes

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