Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2525ddedf8bf66…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 00:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8887f6250835081d46dce9178e854c32 SHA-1: 84b6be0c987dc4ea113e29e310323f364d6185f5 SHA-256: 2e2525ddedf8bf66ffc8b4394de918c417724b3d89e463e27378b83b691ebf95
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised within content that appears to be a lab report. The heuristic PDF_SEO_LINK_FARM indicates the presence of numerous external links, suggesting a link farm designed to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=serial+dilution+lab+report+chemistry In PDF document text
    • http://files.trophyhuntclubohio.com/uploads/1/3/1/8/131871984/gejitotigo.pdfIn PDF document text
    • http://files.cdsbeoblendedlearning.com/uploads/1/3/1/6/131606118/nerexelalu.pdfIn PDF document text
    • http://xobev.frontporchpuppies.com/uploads/1/3/1/8/131871787/77e6acda.pdfIn PDF document text
    • http://files.bouncing2wellness.com/uploads/1/3/1/6/131636737/zirelisalek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0572/files/49309113315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/95183626479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/zibasofufamidolupenabuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5332/5215/files/varanasivaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1328/1688/files/gedepigijesosiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/35194204397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/69552810535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/ludekab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1500/4582/files/samsung_business_strategy_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3159/files/bournside_6th_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/57511902583.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 2872 bytes
SHA-256: ffb551b4bd28c76a6062b542aae19e0df5912490321905e387f9a9a36a0b860e
font_01_sfnt_off00007677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7677 5540 bytes
SHA-256: d06e989d8cb8ab67645432f4d0dfd3ff2b25c017a771aab518bc36ded7965431
font_02_sfnt_off0000890b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890B 10404 bytes
SHA-256: 6e31761b2ce80525e5fa2a829cefafc0b938cf7113dcf61ae0fb95b7bc3cdcc7
font_03_sfnt_off0000ac9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC9C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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