Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e6175b9a0e92e1…

MALICIOUS

PDF

124.0 KB Created: 2021-03-13 18:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: e4d478e358634bc1b170de714bc4c51a SHA-1: cf569e8d07edacf14b574d24225cee81eb46a022 SHA-256: 90e6175b9a0e92e137efa273dd7e326e33fce899503c8789710501db644a541e
146 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The 'SE_CALLBACK_LURE' heuristic further supports a phishing or scam pretext, aiming to trick users into interacting with the document or its links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/wix?keyword=precision+phillips+screwdriver+sizes PDF link annotation
    • http://lufexaxoxak.mygamesonline.org/terukal.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/how_to_work_out_number_of_atoms_in_a_compound.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/khzibhg/depuni.pdfIn PDF document text
    • http://giwudogor.scienceontheweb.net/dosis_cefadroxil_anak.pdfIn PDF document text
    • http://vevufilusik.scienceontheweb.net/wedding_crossword_puzzle.pdfIn PDF document text
    • https://cdn.sqhk.co/kuderoxuz/higcVhe/5776571561.pdfIn PDF document text
    • http://vukabuv.22web.org/31118183735.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/sedekemo.pdfIn PDF document text
    • https://xuvivodoxanujo.weebly.com/uploads/1/3/5/3/135308848/6700366.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/eGijdgh/hollywood_reporter_movie_reviews.pdfIn PDF document text
    • https://jukatuve.weebly.com/uploads/1/3/2/7/132741058/7605510.pdfIn PDF document text
    • https://nonuradijo.weebly.com/uploads/1/3/1/4/131406562/47c3abd.pdfIn PDF document text
    • https://tapebosipufadiz.weebly.com/uploads/1/3/4/3/134366988/juvob.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/nesasoselozuxezunipiwuba.pdfIn PDF document text
    • https://dukidisivaturan.weebly.com/uploads/1/3/5/3/135311912/7636446.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nakepusejedub.epizy.com/marianne_williamson_the_gift_of_change.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/lavozerarubofex.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/english_vocabulary_words_with_meaning_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/cardiomyopathie_dilate_hypokintique.pdfIn PDF document text
    • http://kapodos.rf.gd/finexavuzarafulojotajawo.pdfIn PDF document text
    • http://robexekipojop.rf.gd/hormonas_placentarias.pdfIn PDF document text
    • http://witigunakejawi.rf.gd/11348446299.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_off0001a45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A45C 5156 bytes
SHA-256: b1b69764d8b5b9d513a25eb803dc2d315d68100b3281695bff8b034eb77ef9f7
font_01_sfnt_off0001b5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5FE 12968 bytes
SHA-256: 641378b088329a78d2a300d2dc428a77681d01a08c560fcb0ee496144e344419

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