Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe634cc2ff6031f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 20:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 775efbe4fe26a3747e90d47cb8b364a6 SHA-1: 96b0da97d352783c601248fb7eb34bf0517a68e6 SHA-256: 0fe634cc2ff6031f4e6cb074996c73a8e47e90ac45426116f11de7c2ed653afe
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'accounts payable and receivable interview questions' and embeds a link to a known malicious redirector. This redirector likely leads to further malicious content or exploits. The presence of a large number of external PDF links also suggests a link farm intended to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=accounts+payable+and+receivable+interview+questions.+pdf
    • http://files.gaterocks.com/uploads/1/3/0/7/130738534/daxufitoli-tuxenob.pdf
    • http://files.allprorepairnc.com/uploads/1/3/1/6/131637889/fujeregedono-nomuvunefeborur.pdf
    • http://files.fairvalehigh.com/uploads/1/3/1/6/131637047/tavonodo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/zogimitakojogegiboma.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/badojodazozuxanepibekex.pdf
    • https://cdn.shopify.com/s/files/1/0433/9718/5701/files/21244251628.pdf
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/81828259020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/crisis_core_iso.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/29985991644.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/50365568547.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/daxutemeduviz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/lemexalulubepomibo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/54750246357.pdf
    • https://cdn.shopify.com/s/files/1/0437/6572/7384/files/accountancy_comprehensive_project_for_class_12_cbse_with_gst.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_off000065fe.bin
23fb79f1f2acc314fdebbe39a7e9374cf28e82065bdfa948200c5ec635106b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FE 5692 bytes
font_01_sfnt_off0000798b.bin
8d1d4e0e3b2695cda441823e0a4546d5c0e41d702963eadc52f1dead5d5d2adf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 9812 bytes

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