Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe95a6e14b4ef3a5…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 08:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d60de8be0bba15d5744ce722bf51b23f SHA-1: 5a6fa75fb6775144f72d76e1827931c2f2ca7927 SHA-256: fe95a6e14b4ef3a5087a511ab42309c79e0bcd98286f41ce4931f7b8ffc2f5fd
152 Risk Score

Malware Insights

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

The PDF document contains embedded links designed to appear as vehicle owner's manuals, but the primary link redirects to a known malicious infrastructure at ttraff.ru. This suggests a social engineering tactic to lure users to a malicious site. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=bmw+x3+2018+owners+manual
    • http://mapidu.funeralministry.com/uploads/1/3/1/4/131453046/fovijagevabezubafoj.pdf
    • http://xagen.oregontrailirissociety.com/uploads/1/3/0/8/130814297/mizanepezumugi-satoj-kejosabawawik-seweremun.pdf
    • http://files.fairytaleeventsaz.com/uploads/1/3/1/3/131398117/37f5812c88.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/nuxedavokepekagip.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/panarizesajijinoruxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5164/6119/files/1998_jeep_grand_cherokee_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/hernia_inguinalis_usu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/zonuxevepebezijuxob.pdf
    • https://cdn.shopify.com/s/files/1/0462/9345/0913/files/true_caller_id_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/jiraworebuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/alter_ego_5_c1_c2.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/dungeon_defenders_build_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/7486648703.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/96954058752.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000543e.bin
65556a0c1cdee3998ab89529808c258d320b0b8aac88108c7c094015f4d942f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x543E 5724 bytes
font_01_sfnt_off000067ae.bin
ea0cbcc7393ab09f685c81ae962877706e8e687e3702a63613b471f147a9c381
pdf-font-stream PDF embedded font (sfnt) at offset 0x67AE 9744 bytes
font_02_sfnt_off0000894d.bin
d286e8b4d1cdafc5f769987bdccf7a6368ad55d0d3b8f98fd56bc2ae223999f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x894D 16076 bytes