Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4828ca10d1bf9a…

MALICIOUS

PDF

73.8 KB Created: 2021-03-11 01:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 3680dbeb29a5bca68fc19a01c133d3ef SHA-1: 269ef49606bf1159b21c555de27e97b80425dbb3 SHA-256: 0b4828ca10d1bf9a3bd8cdeb7eb74ec7ac8fd5be3f8519462a487d7a16eef0fa
156 Risk Score

Malware Insights

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

This PDF document was identified as malicious by a ML classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains a large number of external links, suggesting a link farm or redirection strategy to host malicious content. The primary malicious URL identified is https://xezojetit.ru/strik?utm_term=jersey+mike%2527s+tuna+salad+recipe, which is likely used to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=jersey+mike%2527s+tuna+salad+recipe PDF link annotation
    • https://cdn.sqhk.co/merabuvi/iehjLDv/divoxixirivikujuvipu.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/wgfH0cF/didier_drogba_chelsea.pdfIn PDF document text
    • https://kefuvavubuxega.weebly.com/uploads/1/3/1/1/131164002/zemewerufi-xuweni-xobidod.pdfIn PDF document text
    • https://witojezig.weebly.com/uploads/1/3/0/7/130776148/fipulitotabom.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/77358054932.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/their_eyes_were_watching_god_themes_essay.pdfIn PDF document text
    • https://cdn.sqhk.co/bofadulal/haEJhfY/starfall_calendar_2002.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/yieiigj/making_cupcakes_from_scratch.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/17ba30709e36c.pdfIn PDF document text
    • https://cdn.sqhk.co/pijavagoke/hwhavhf/my_verizon_mobile_app_login.pdfIn PDF document text
    • https://subogepaweb.weebly.com/uploads/1/3/2/3/132302814/6477999ec436.pdfIn PDF document text
    • http://jiwimejikigigu.mywebcommunity.org/68960858560.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/pidufozu/24429328068.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/bajrangi_bhaijaan_video_song_bestwap.pdfIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_896a50647cfb48e1970ca04a63a1cdd5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/chimani_pakhar_marathi_movie_all_song.pdfIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_5dc1560c8b6246f587be54546a2d418e.pdf?index=trueIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_c4feb9939e224e9a93e73cd47a992b15.pdf?index=trueIn PDF document text
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_7458ef99e9ef455380f79a3759c028ff.pdf?index=trueIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_00a1b54aae10465e91ee3eee6cf59048.pdf?index=trueIn PDF document text
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_ea1bf8b39e304b61b3cdae56780c2a46.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutasujal/label_template_free_printable.pdfIn PDF document text
    • https://6525eaf8-9a42-4119-9fb4-c3d475b3b78e.filesusr.com/ugd/80bfa9_0264feaae35f47f19a4c4e445bf958c3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/15584741089.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_off0000e3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C8 5408 bytes
SHA-256: 7797f14755fed30a75d3094102d8b8415735253351d31c82121f0386326efb00
font_01_sfnt_off0000f629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF629 10416 bytes
SHA-256: b3f73cfc6ca14c396498d4d13601bd6cf89aa77ab5cb62b8f7a7a0d693998dcf

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