Malicious PDF — malware analysis report

Static analysis result for SHA-256 29697813bd810ffa…

MALICIOUS

PDF

41.7 KB Created: 2020-08-09 08:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35e1210abb47f7bffeabbe054bab109f SHA-1: d0fb734157e84552d9ad608b27d97dadac840298 SHA-256: 29697813bd810ffaf02725fc22049b01077c258ae891938d8c60320053f302c7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, including one to a known malicious redirector at 'https://ttraff.com/pify?keyword=malaysian+anti+corruption+commission+act+2020+pdf'. The document also features a large number of links to other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. No scripts were extracted, but the primary attack vector is the malicious redirection and the extensive link farm.

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=malaysian+anti+corruption+commission+act+2020+pdf
    • http://files.dhammalao.com/uploads/1/3/1/3/131398457/pilurog_bebibifa_matajafidami_suwapisev.pdf
    • http://files.kayemaahs.com/uploads/1/3/1/4/131454521/semip-sufadefefirovi-xexada-vireki.pdf
    • http://guwowav.neslle.com/uploads/1/3/1/0/131070374/1375020.pdf
    • http://files.lionessprayer.com/uploads/1/3/2/3/132303270/wumugagiguvejo_lumibakoki_kopexumipipufa_xonuwugaka.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2844/files/pearson_education_5th_grade_math_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5094/files/58142825670.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/16824685929.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/arquitectura_contemporanea_gavinelli.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/77775715082.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/69690975751.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/84738554093.pdf
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/yajur_avani_avittam_2020.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/resam.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/1819013652.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/b._com_5th_sem_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/20113484639.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/catholic_prayer_for_the_dead_eternal_rest.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/mesupivabamazasonaletaf.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063be.bin
95ca83465d70c4006bda8d5e348015904c53d9c111e45d67934433d014c34c9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 5684 bytes
font_01_sfnt_off0000771c.bin
47240e95379fc17d7ada4b7f7b327f53c5e5e44ee06e5294ba3bc577618e5ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 9980 bytes

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