Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ab0c61c0703f6a…

MALICIOUS

PDF

78.2 KB Created: 2021-03-08 11:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 773df48a3ed1003012e027f4ebae2367 SHA-1: 1430ee735f9b212b705eda34868a74c43f72ac53 SHA-256: b7ab0c61c0703f6a1cafedd6e1e46f1ce988623fe01fe53662a277d1e7a7ef37
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 hosted on dynamic DNS services and appear to be part of a link farm. The primary URL suggests a phishing or scam lure related to an iPad case. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojanized document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=what+size+case+fits+ipad+mini+5
    • https://cdn.sqhk.co/tenokesime/hjgB0hc/rukenepofikoje.pdf
    • https://cdn.sqhk.co/jivazufevi/eRSsthe/womens_tie_dye_sweatpants_and_sweatshirt_set.pdf
    • https://cdn.sqhk.co/zusisoko/iZhfhel/diponemun.pdf
    • https://cdn.sqhk.co/vorowobenune/jhdjdhe/cracked_skyblock_servers_1._16.pdf
    • https://static.s123-cdn-static.com/uploads/4366367/normal_600649c1264f9.pdf
    • https://cdn.sqhk.co/subogutaze/cNghjiI/max_weapon_mastery_disgaea_5.pdf
    • http://xariketixagat.mypressonline.com/planeacion_estrategica_tactica_y_operativa_de_coca_cola.pdf
    • https://tugofemupufere.weebly.com/uploads/1/3/4/5/134584107/ropomotuzawutifi.pdf
    • http://xovekofetovo.66ghz.com/soweno.pdf
    • https://jakoxizejibak.weebly.com/uploads/1/3/4/3/134348863/84b1613ca8ad4d.pdf
    • https://cdn.sqhk.co/mesafovojifo/DjfCkTK/visadajuxepuzawajafiv.pdf
    • https://cdn-cms.f-static.net/uploads/4479917/normal_5fd2e0a1d41a6.pdf
    • https://cdn.sqhk.co/moxasapiwer/aLic2LU/bubble_spinner_game_free.pdf
    • https://cdn.sqhk.co/nejajevafode/Cc8xagh/earth_wind_and_fire_fantasy_sample.pdf
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/3837746.pdf
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/1635814.pdf
    • https://vexusonefopi.weebly.com/uploads/1/3/4/5/134583249/4290872.pdf
    • https://cdn.sqhk.co/xewafazuk/qkjjIgd/transmission_jack_adapter_plate.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://saluwagasa.onlinewebshop.net/how_to_buy_a_tiny_house_on_amazon.pdf
    • http://sisejarozig.epizy.com/vulamoruwazub.pdf
    • http://tevefetilojas.atwebpages.com/tibilawepenixase.pdf
    • http://telugave.epizy.com/tovokega.pdf
    • http://zenowalu.rf.gd/28110479545.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2b5.bin
a6b8f1d7d3c4d1dd370732c414e6381182e3c5c93b6cc6d4e0f485b24da12cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B5 5456 bytes
font_01_sfnt_off0001053e.bin
84754ed2bf6517ff0c5e26ae76bc32c7a5f206d7e582f82bbdcd728da0f70ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1053E 11192 bytes

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