Malicious PDF — malware analysis report

Static analysis result for SHA-256 699f2e98185dad29…

MALICIOUS

PDF

76.7 KB Created: 2021-04-03 15:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0b23e58ba6df169d14f02f4763a803 SHA-1: 61c6fc579a3e460b3719d1a270184b5e69b7e8cb SHA-256: 699f2e98185dad294c2fdfb9d18f5f2aa3063e8fa908d84486658cf4a611b9b0
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to SEO-optimized PDF documents, indicating a link farm. The primary external URI points to a suspicious domain, suggesting an attempt to drive traffic or distribute malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/strik?utm_term=the+alchemyst+the+secrets+of+the+immortal+nicholas+flamel+review
    • http://copyrightreports.com/is_there_a_season_2_of_tales_from_the_loopvzrss.pdf
    • https://cdn-cms.f-static.net/uploads/4490264/normal_601ed8c7cf648.pdf
    • https://tixoguwod.weebly.com/uploads/1/3/4/6/134694164/mugejofuzujivawema.pdf
    • https://cdn-cms.f-static.net/uploads/4476301/normal_601dadbd34fd7.pdf
    • http://lemopebese.66ghz.com/knowledge_matters_accounting_answers.pdf
    • http://timedezalug.iblogger.org/worabasesikex.pdf
    • http://srakan.space/torufejofewm75z.pdf
    • http://walkover.me/how_much_is_adobe_premiere_for_studentsbfvdy.pdf
    • https://static.s123-cdn-static.com/uploads/4450506/normal_5fcd3f673edf5.pdf
    • https://zalozudipob.weebly.com/uploads/1/3/4/6/134673455/kamitonibemane.pdf
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/noketomibekavedega.pdf
    • https://vufagejibuto.weebly.com/uploads/1/3/1/4/131483336/46cd5.pdf
    • http://thedefenseforge.com/velakemejirefoveguxpr48f.pdf
    • http://sivupagelif.iblogger.org/zabaxumarotagaka.pdf
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/ebd28be7c221d3d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0d1f2e25-2ef3-4263-ae0b-f2ec5092d8ce/what_battery_for_mobility_scooter.pdf
    • https://uploads.strikinglycdn.com/files/57cc4064-6f0a-44ec-a836-c18b31953953/how_to_move_mt_fuji_book.pdf
    • http://forozilixoder.rf.gd/76862434846.pdf
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_33debd0b892f437ab522ab368f904d93.pdf?index=true
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_da56dc483db1477f9b343ca47ce0f59b.pdf?index=true
    • https://14da0a27-f261-4d4b-8668-3a369f5c966d.filesusr.com/ugd/46429b_c060d50c008543f3ab7a638173ccf097.pdf?index=true
    • https://dcd55a6f-f4d9-4ab7-9ea0-0dac4ffa5d6f.filesusr.com/ugd/f7cbe4_e8e0cc8c22b847f5a00196b4f9779f43.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef3b.bin
101cfd89fd8d17901c369a7e1cb115a6187ef6e0a483be67cf3137bc14888760		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3B 5324 bytes
font_01_sfnt_off00010141.bin
670e977224c9565e8e57231f6f6d38a3bed59846b45e125d4436adc2397f42d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10141 10408 bytes

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