Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d5e33988c644dc…

MALICIOUS

PDF

47.2 KB Created: 2020-08-09 18:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11d32b6dcbca300ee5d8f747eecc48a0 SHA-1: 7af27ae840415f82c7b2ab6a04b6687a61e46865 SHA-256: 03d5e33988c644dca1e2a0987ba831fbc717fe29dcdb3903d22cdfe6256f3bcb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. This indicates a likely attempt to lure users to malicious sites, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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=convexity+meningioma+pdf
    • http://files.sneakermutt.com/uploads/1/3/0/7/130776164/434337.pdf
    • http://files.valskountrycorral.com/uploads/1/3/1/0/131070230/7540802.pdf
    • http://files.uniquedobermans.com/uploads/1/3/2/6/132681556/3f1bfc6.pdf
    • http://files.srepto.com/uploads/1/3/2/7/132710491/vuliraz-poditaxurisut.pdf
    • http://files.powermechanical.com/uploads/1/3/0/8/130814172/bf4f013.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/fejasuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/4420690042.pdf
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/10464579624.pdf
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/stream_of_consciousness_in_mrs_dalloway.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/jerufosoge.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/10189511028.pdf
    • https://cdn.shopify.com/s/files/1/0447/9136/5792/files/vertical_aerial_photography.pdf
    • https://cdn.shopify.com/s/files/1/0429/4482/3452/files/absceso_gluteo_tratamiento_antibiotico.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/dugab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fikikotiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/nakenipugofijitixu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d93.bin
3b99e95e4a47176be84b98d66b5d43cbf1a662ce8bc3359bd9718e4de7e49e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D93 5096 bytes
font_01_sfnt_off00007ef1.bin
8bd4df4ebd453e2c622749461a80eec5c9c1256982178bd76f19ed599e08078c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 10160 bytes
font_02_sfnt_off0000a1a0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A0 4324 bytes

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