Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abc0b4c26b5bd16…

MALICIOUS

PDF

37.6 KB Created: 2020-08-16 13:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0961dad22041949473118f75d0744a0b SHA-1: 0f018e58e1e6a5318381c991e2cf099c636f3a62 SHA-256: 7abc0b4c26b5bd1688e76eae819f6d13e10ebf61d4f300e642e03862a001223e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=abhimanyudu+movie++jio+rockers`. It also exhibits characteristics of a PDF link farm, embedding numerous external links, some of which are to benign-looking resources to mask malicious intent. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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.ru/pify?keyword=abhimanyudu+movie++jio+rockers
    • http://files.monitor-io.com/uploads/1/3/1/6/131606284/dumoxuwefe-sosew.pdf
    • http://pukeme.raychellemuhammad.com/uploads/1/3/0/7/130740044/puved.pdf
    • http://files.arwarwick.org/uploads/1/3/1/1/131164479/nawad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/cambridge_vocabulary_for_ielts_advanced_band_6._5_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/77102685073.pdf
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/carlson_biopsychology.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/dakorupejoganifobud.pdf
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/sosapulavub.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/tetajinuvowex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87074842841.pdf
    • https://cdn.shopify.com/s/files/1/0432/8754/3964/files/barron_s_toeic_7th_edition_vk.pdf
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/96722703103.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/tubufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/mijavajovapemuw.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_off00004aba.bin
a645caf48f629bcbef30ac6d3077c49b62f4265011bd970aa05440d3f9bad982		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABA 5580 bytes
font_01_sfnt_off00005d86.bin
86663aae7a0d2238f9dd8137f7f182a06c6039e9fc44afdad52b6ca665afcb9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 2024 bytes
font_02_sfnt_off00006747.bin
d956cae5a0741806d362b19b1d4e136642d2d909c3771dd9f3fc12657656924e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 9992 bytes

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