Malicious PDF — malware analysis report

Static analysis result for SHA-256 0118422141fc2efc…

MALICIOUS

PDF

76.8 KB Created: 2021-03-14 01:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 83dba7245b4b4a2fcc319472ba1f7fc3 SHA-1: 5fba77c12498237138fe2657fbd7ca751ddfe628 SHA-256: 0118422141fc2efc853d49981b220b30371596978ddac18f67b848bc4104e7bd
186 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, indicating it functions as a link farm. The presence of the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics, along with the ClamAV detection and ML classifier flagging, strongly suggests malicious intent. The primary URL, 'https://fokemale.ru/wix?keyword=empire+of+the+fading+suns', is likely used to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=empire+of+the+fading+suns PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447915/normal_603eead7a18f5.pdfIn PDF document text
    • https://zarimuxeve.weebly.com/uploads/1/3/4/8/134897304/lugajuzasegabajoli.pdfIn PDF document text
    • https://cdn.sqhk.co/nesorosuxim/I8jgnGZ/heroes_legend_idle_rpg_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wafexumu/if8axLx/iso_45001_audit_report.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/AhdHchh/xisusuwugananefoxakorap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454042/normal_5ffdc457175bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_6047fdd5f2bd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465545/normal_6003f02d588e8.pdfIn PDF document text
    • https://fuwipinax.weebly.com/uploads/1/3/4/0/134016709/7108061.pdfIn PDF document text
    • https://cdn.sqhk.co/purizepore/fIicTDm/grid-_template-_rows_full_height.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415769/normal_603ba99e0babf.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/tHR0Lhh/76579039535.pdfIn PDF document text
    • https://kajovagej.weebly.com/uploads/1/3/4/7/134747054/3227247.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_332d34c2a4d84396848e5bed2a51aef9.pdf?index=trueIn PDF document text
    • https://8035c368-62b5-4e0f-b07c-73fd2baf85c9.filesusr.com/ugd/2ee8d4_d090647a63ea45128e0dfa223a23b9d7.pdf?index=trueIn PDF document text
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_5270d444637e427dbfe06884e04a98d6.pdf?index=trueIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_8934be5eb8ce44b8a71a2ea8b74e28fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/bissell_proheat_2x_revolution_pet_upright_carpet_cleaner_reviews.pdfIn PDF document text
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_9a870fd9416948a8aec03696ddd32c8b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekife/37179429882.pdfIn PDF document text
    • https://5b3fc17b-a4fb-4144-9a53-ff617e35bc6a.filesusr.com/ugd/696117_73d4f4c44c8140c6a529b6fe05ad8f59.pdf?index=trueIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_c2f82b7d333f4371931d24eedf4b5f78.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_off0000efc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC1 5380 bytes
SHA-256: cd92b187ac9a9c845b7b9ae9dfa70acf37ed8d41e28b86da8442a380950032d6
font_01_sfnt_off000101e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E9 10544 bytes
SHA-256: 6609ae2a6954de522015813561cb4c61e07e341648b8b855b8400929d6aeae69