Malicious PDF — malware analysis report

Static analysis result for SHA-256 345610a499d347e7…

MALICIOUS

PDF

49.8 KB Created: 2020-08-11 19:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83f20c993e19f293ae36485402f87c1a SHA-1: 59020c92a25fbacc205a0c6c9a3612f41b7d35e7 SHA-256: 345610a499d347e7dba43184ab7c77c3e1e91fab7231439eadfb5e8a6caab07c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with a primary link directing to a known malicious redirector. The document body, though obfuscated, includes the target URL, suggesting an attempt to lure users to malicious content. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic.

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=plano+barrios+de+madrid+pdf
    • http://files.acsoverheaddoors.com/uploads/1/3/0/8/130815095/gawaduledeburogijo.pdf
    • http://files.mindfulnesscenteronline.com/uploads/1/3/2/6/132681210/kipabameloge_berewudideti_tajozavab.pdf
    • http://files.namastebh.com/uploads/1/3/1/4/131407493/gobilimorowifas.pdf
    • http://files.yourlakeforestpark.com/uploads/1/3/0/9/130969966/xaluboketa_bogeg_fagimajuzib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/denaroxixizugunapot.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/the_science_of_accelerated_learning_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/38791740591.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/87163573242.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/terapi_ameloblastoma.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/99604967397.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3318/files/12462148972.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/periodic_table_of_elements_with_charges.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/kisifotudefugoribozos.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/bodokav.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_off00007670.bin
4cfc7ace91cfeba15c4e7f069c9ee1fb9f2f73f674ba80a04ebc6fe8e66cc3a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 5036 bytes
font_01_sfnt_off0000875f.bin
7e34bfa8968782f68160a85e7d285b51c8097e158859a08e7514ba12f397e5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x875F 10916 bytes
font_02_sfnt_off0000aaf9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF9 4324 bytes

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