Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52762ed399157bb…

MALICIOUS

PDF

71.7 KB Created: 2021-03-18 00:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6a5be586890c7354c3b03b6287c4deb7 SHA-1: 81e0825032fe7c7687d601c9565c2822e4eb31d8 SHA-256: f52762ed399157bb40d9c7d292e12370dcea491c18d2a612a9e03d64ce131e23
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one identified as a potential phishing lure related to 'sea doo service manual 2009'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or distribution mechanism. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this file. No scripts were extracted, but the presence of external links points to a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/wix?keyword=sea+doo+service+manual+2009 PDF link annotation
    • https://cdn.sqhk.co/vewukiziwemi/if74ghq/gigoferovakuped.pdfIn PDF document text
    • http://agent-ritual495.online/mipaziluglsqr.pdfIn PDF document text
    • http://itnegozio.info/befizozevijobaremajenazomag07a.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/bgjTlje/bein_sport_connect_france_login.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/p3Xxmic/bts_song_quiz_emoji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://569e8712-2873-4b93-a654-ea71b6b809e3.filesusr.com/ugd/345929_a8138e54f52249a18963df022c0c38c9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kumasala/15522269865.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/cooling_sheets_for_twin_bed.pdfIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_6e3a8c57e6ef4dbf99d26eb4b7063475.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/wilupetufuxuwexapoxunorij.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/metal_gear_solid_4_rpcs3_wiki.pdfIn PDF document text
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_7ea864c122be4fc683a8d0e7d5f7976e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/aplikasi_zarchiver_pro_android.pdfIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_7786cb49778546a4b9a7ff4ab74e66d9.pdf?index=trueIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_db38dd1ff3ed4675ae14a1dee31c6108.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kufazete/18566824513.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/lipipuvegito.pdfIn PDF document text
    • https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_c09e9bf08a30433a80ade4f705075a0d.pdf?index=trueIn PDF document text
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_60fe284480c14600b451cb1074006419.pdf?index=trueIn 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_off0000d9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BD 5676 bytes
SHA-256: 1458d51d80cd2df62b80b11ee03088df2ea980989501952a3af912dcb77a8e04
font_01_sfnt_off0000ecfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFB 10420 bytes
SHA-256: 1b989947a91c97b706059520cb362eb90c2025b7eb8c6e9593e505c942af89bd

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