Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed29797b87ab9c8c…

MALICIOUS

PDF

70.4 KB Created: 2021-03-24 18:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a331ca9a12e0cae6937e3f6a19b455ff SHA-1: 11f7bd9336b2fa17cae5547b83d0bee5c34e524c SHA-256: ed29797b87ab9c8c12103723da7f1f6e33b233131f7d364fa2bded1d8a621be0
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://lozipotod.ru/123?utm_term=bibaho+obhijaan+full+movie++filmywap PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496153/normal_5ffd60c2d2859.pdfIn PDF document text
    • https://fijuvosezo.weebly.com/uploads/1/3/4/0/134096395/guwuzomene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408481/normal_6023e5c9c9d9e.pdfIn PDF document text
    • https://verulofu.weebly.com/uploads/1/3/4/0/134012380/nadudi.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/idhhiUy/26667814367.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/fihhiRh/sosoxufirunasutawunep.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/pedevivimejomomafow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_604f399f8021d.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/RwEjgKD/4159668522.pdfIn PDF document text
    • http://sijemogezabusa.sportsontheweb.net/why_wont_my_mic_let_me_talk.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/iemhRie/rejifofevubilu.pdfIn PDF document text
    • http://gepanukotex.getenjoyment.net/steven_pinker_enlightenment_now_summary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/72f0b3f3-9582-4474-83d6-7471118e470a/jakafewefodajavak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90cc79d6-f775-4d97-a714-ad4df68891d0/fire_and_blood_book_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ded4fd2-9064-4efd-8a9c-c7fd851cf48a/85014872944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1185ac73-4874-4f41-a2ef-a443fee43c67/growing_tomatoes_in_north_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/dugerafo.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/cosco_scenera_next_convertible_car_seat_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/kenosuvaxuvuzupewo.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/98596433977.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_off0000d380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD380 5384 bytes
SHA-256: 764a2175ba0d7158d1ccf85c5c8aeee1e70ec19656eb55f892e720d01e7d8a1a
font_01_sfnt_off0000e5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D3 10640 bytes
SHA-256: df59089c329639247c7bf0a22cb70cf4503a176d6ab655731db2045ed8ff15c1

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