Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc02d3df282b780…

MALICIOUS

PDF

80.3 KB Created: 2021-03-31 18:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c157e5f1e7473a7431b4f143266595da SHA-1: 5b712d850e0c38cb5bb8205143606b3d5ede996c SHA-256: fcc02d3df282b780e95fbf0c06f5503a9e0197f163783b51484b63041440966b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9994

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 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://jottigo.ru/strik?utm_term=a+single+man+book+summary PDF link annotation
    • http://50off.pro/sat_chemistry_subject_test_prepmpqxq.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/wolok66g7m.pdfIn PDF document text
    • http://tgesheff.xyz/whatsapp_messenger_for_ipad_9._3._5u8ed6.pdfIn PDF document text
    • http://chunyoo.com/maforefoxexasedufekiruj1orqf.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/kangaroo_care_guidelines_ukumkka.pdfIn PDF document text
    • http://instapresent.site/hp_government_holidays_2020a9mi2.pdfIn PDF document text
    • http://belplitka.ru/jimudowamumutohcncu.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/1f735686-ec0f-4da2-a4d0-554939513a14/vavukisipura.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/57283969898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e18f86f4-b41f-484d-b633-3cfd0d6432ed/frigidaire_mini_retro_beverage_fridge_pink_efmis129.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/what_does_magus_mean_in_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/ranure.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/wubotifu.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/tetutalojako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72841a8d-0eae-48f4-a2d0-9835a83e7e76/mekekuzabajebetivotezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc32ec1f-e592-481e-bb00-9ed89eebb70e/71613285941.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/pazazokesatikori.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/5056281308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ab09cc-9b7f-4e7f-8db5-dfcb7acd16a3/zusenividamimit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92b510aa-35e3-46df-ac06-165e0b8f5ee8/53283124129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcca84ee-5672-4b5a-9065-905e40dac616/89579274662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9357a69-bed4-4615-a0b2-03f54c757fd1/78590817487.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/47728098482.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC94 5300 bytes
SHA-256: a8ccc85251516abadd646fb6ee066eedf0907444599079acbed9eab92029a54b
font_01_sfnt_off00010e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8D 10432 bytes
SHA-256: 656d7070a365459e4cdbfba5219cb6407c2629e8e9dbff7de0f4be7bacfda114

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