Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b80e5b1d2c667c7…

MALICIOUS

PDF

115.5 KB Created: 2020-08-07 16:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2631fe02a7aca377cbff5546efd6de1 SHA-1: 62840553a0bbb266bb58b1988f6b6eec31a40d43 SHA-256: 0b80e5b1d2c667c7eec4c3e7c8887f4970e55b6b1dd138b9c338b0c9f2606d1f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=agarbatti+raw+material+list+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. These indicators suggest the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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.cc/pify?keyword=agarbatti+raw+material+list+pdf
    • http://files.bcacdst.org/uploads/1/3/1/3/131398541/tinajoliripizejili.pdf
    • http://files.flowersmakescents.biz/uploads/1/3/1/4/131437454/8539206.pdf
    • http://files.ballroommagicdancecenter.com/uploads/1/3/2/8/132814302/61c09379344e.pdf
    • http://wuzoberud.stevenlangeauthor.com/uploads/1/3/1/6/131637240/a9ecb6ce.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/97516234689.pdf
    • https://cdn.shopify.com/s/files/1/0436/1191/4403/files/mukilovixagiwuvalopub.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/suwofabepujowokujirine.pdf
    • https://cdn.shopify.com/s/files/1/0430/2539/9971/files/starving_in_suburbia.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/centurylink_router_ip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/fotarokegodugifosesezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/vefalorar.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/30227140979.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/autocratic_leadership_style_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/90978474026.pdf
    • https://cdn.shopify.com/s/files/1/0431/9376/1941/files/viwozumalobatojewefas.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_off00016818.bin
7e835a65281e724af40668997b1b85dce0fc530d2f6d699b6995532bd94309ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16818 5580 bytes
font_01_sfnt_off00017b0e.bin
1aa73668369266f3e33b74e21b67e815a38573b8fce31e9135a7a0579ca3463d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B0E 16296 bytes
font_02_sfnt_off0001ac8f.bin
10e2dbaa9a4b79dca50033a0a94392aa3b3ccbcd9dac826e835618f4ca126412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC8F 4708 bytes

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