Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccb622d993b0eb6…

MALICIOUS

PDF

43.0 KB Created: 2020-08-20 05:28:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27f3603623ad6c04697c16cf65a9a3de SHA-1: ca6380468a4755c1f39ace0a5a020f7afa8c77b7 SHA-256: 0ccb622d993b0eb6f870b2a392807b968443c599f421d9044893b80de80faf39
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious link disguised as an admission form, which redirects to the known malicious domain ttraff.com. This indicates a phishing attempt to redirect users to malicious infrastructure. The presence of numerous other links, many pointing to Shopify domains, suggests a link farm used to obscure the malicious destination.

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.com/pify?keyword=ba+private+admission+form+2019+karachi+university
    • http://kidirub.wildfernlodge.com/uploads/1/3/1/3/131380550/9af044d76f204.pdf
    • http://files.nohokaiproductions.com/uploads/1/3/2/3/132303378/xedakaso-setogatus-muzivome.pdf
    • http://files.southrivervet.com/uploads/1/3/0/7/130775257/maferutalonova.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/warhammer_40k_khorne_daemonkin_codex.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/jotiwenokot.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/vcut_kitle_indeksi_nasl_hesaplanr_forml.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9648/files/lonely_planet_cuba_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/juzazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/surfeasy_vpn_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0437/7912/9501/files/fodivokibajuvixurizugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/wowixusivopuxojala.pdf
    • https://cdn.shopify.com/s/files/1/0434/6888/2072/files/88300996582.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8930/files/govome.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_off00005c56.bin
41a4e1ca9113ceca4c015a9c30c8f9f3411ec79f95bf52b4e440fcf0114584b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C56 6120 bytes
font_01_sfnt_off0000710f.bin
91e9e3d7175af912099715f599906577fa315a300736a8da7bcb3f8998db7aeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 14840 bytes