Malicious PDF — malware analysis report

Static analysis result for SHA-256 49dac2a8c889822a…

MALICIOUS

PDF

77.2 KB Created: 2021-06-01 09:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a85248dab0c0a78ff55cc27b2bd2eb38 SHA-1: d67c9341cf5e053a7616e016a3528c2780779ba9 SHA-256: 49dac2a8c889822a52d95a1570d4dc8a4c007c1d530453cdacc8b6495a20a25c
176 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one prominent URL suggesting a lure for a 'redeem code generator'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely for SEO manipulation or to host further malicious content. ClamAV detection and ML classification strongly indicate malicious intent, likely involving the download of a second-stage payload via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://allytemp.ru/pbw?utm_term=dead+target+redeem+code+generator+for+android+phone
    • https://finibolamojirum.weebly.com/uploads/1/3/5/3/135341575/e6d53698c241d60.pdf
    • https://jitoxazenop.weebly.com/uploads/1/3/4/5/134588357/780027.pdf
    • https://rojilijeliw.weebly.com/uploads/1/3/1/4/131409822/wupugejipitiled-gizidixo-gonatuz.pdf
    • https://cdn-cms.f-static.net/uploads/4490272/normal_605dacd0cef15.pdf
    • https://cdn-cms.f-static.net/uploads/4373997/normal_60358006ce1d6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wuwazilizos.pbworks.com/f/61581734260.pdf
    • https://uploads.strikinglycdn.com/files/e79f92eb-89a3-4f78-ada5-02267d72ea11/nail_salon_open_near_me_5_star.pdf
    • https://uploads.strikinglycdn.com/files/8bee4f8b-74b1-49f9-aecb-8acd046b65cc/rolasudixosijutuwunezu.pdf
    • https://uploads.strikinglycdn.com/files/75014ecc-4e9a-41fe-8bb0-d470b3511d45/kiwitopedijeweguve.pdf
    • http://sazupamufode.pbworks.com/f/45327580062.pdf
    • https://uploads.strikinglycdn.com/files/c3cd4317-d39d-4730-9143-80c959149871/altered_carbon_season_2_episode_4_plot.pdf
    • https://uploads.strikinglycdn.com/files/364c1e95-7177-4c1e-9d0f-88ac4ed55968/vixefox.pdf
    • http://pokuwatosat.pbworks.com/w/file/fetch/144438078/23198454251.pdf
    • http://nigezid.pbworks.com/f/gufudowisalavavaresexad.pdf
    • http://tazijebep.pbworks.com/f/best_buy_return_policy_without_receipt_gift.pdf
    • http://xojifot.pbworks.com/w/file/fetch/144413610/periodic_table_of_elements_symbols_and_names_quiz.pdf
    • http://fixiguru.pbworks.com/w/file/fetch/144436398/joxusivititabasatigemi.pdf
    • https://uploads.strikinglycdn.com/files/a2124c28-167e-4b55-a99e-145bda0bd859/what_is_the_easiest_english_bible_to_understand.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee5.bin
fefbbb749679d6c255577855d06181feb247e462aa75269492cfb35b651f94e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE5 5356 bytes
font_01_sfnt_off00010101.bin
d6957ed663608da234a890cbbe80febf6b256db559a6a81e445d1d8a2549d89c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10101 10784 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.