Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e69aea693bc5ed2…

MALICIOUS

PDF

79.8 KB Created: 2021-03-26 09:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 78f68556a4183e45f39ebf511b8c1ccc SHA-1: ce9ecde9731df2154675831e518ace95b1819da6 SHA-256: 3e69aea693bc5ed28c0213e21071ab58eab262abc6e592c6e2cdf44c174c2863
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to potentially malicious domains, and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to distribute traffic or host malicious content. The embedded URLs likely serve as lures to phishing sites or downloaders for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/award?keyword=billyoh+playhouse+assembly+instructions+pdf PDF link annotation
    • https://zafapuguma.weebly.com/uploads/1/3/2/7/132712217/sikesejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_602ff00449c1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393041/normal_5fce8ea675502.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/74512802603.pdfIn PDF document text
    • https://zunexoxefa.weebly.com/uploads/1/3/5/3/135340588/kebuzevuvamezaxa.pdfIn PDF document text
    • http://zisudupasukivop.iblogger.org/military_phonetic_alphabet_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452837/normal_6014357fe7725.pdfIn PDF document text
    • https://fujelaxu.weebly.com/uploads/1/3/4/7/134704358/vusanexetarig.pdfIn PDF document text
    • https://zafubunemajuz.weebly.com/uploads/1/3/5/3/135314528/9151222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/72158013904.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/32411195425.pdfIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_48ccbb0887714cc9baf67823cd42075c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/guzobunenalelug.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/gevav.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/lugufu.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/what_is_a_mri_guided_breast_biopsy.pdfIn PDF document text
    • http://riwimowuf.epizy.com/venice_bus_map.pdfIn PDF document text
    • http://borogibapomad.epizy.com/whatsapp_video_2019_mp4.pdfIn PDF document text
    • https://74f55dc1-c9a5-4be3-8cb6-5a41d2e6c5ca.filesusr.com/ugd/bacb18_05750df1271a4a9581bcb67c1843d3c0.pdf?index=trueIn PDF document text
    • https://591e60e9-54e8-4b06-a9a7-f2e0522969d0.filesusr.com/ugd/1fd4b7_fbb84c0164274103956075e7940776fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/sofugasanovu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92E 5688 bytes
SHA-256: 893049bbf76235ec743515172505ff3cdf6f9724cb499fbe26465bb082336278
font_01_sfnt_off00010c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5E 11068 bytes
SHA-256: 8c286325c57dc0188c332e303077799811821df0c201996dbc6f15504a56ef52

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