Malicious PDF — malware analysis report

Static analysis result for SHA-256 037e031098bd1be5…

MALICIOUS

PDF

86.7 KB Created: 2021-03-08 15:56:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 48af1597db61326fb556812ea2e3cdf6 SHA-1: d47ccf42a94efbbbe33d812d9313d4782ddba371 SHA-256: 037e031098bd1be5da72fe5dca003736533e94f43845f71c44fa49d318ba91af
176 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical detection for a link farm and ML classification as malicious. The presence of embedded URLs and the 'SE_CALLBACK_LURE' heuristic suggest a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links point towards an attempt to redirect users to malicious or SEO-spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://nipisod.ru/wix?keyword=pbs+tv+schedule+norfolk+va PDF link annotation
    • https://mogivara.weebly.com/uploads/1/3/2/7/132712472/nepiza_wopasuduxenex_nilemi_nukaboludebuvav.pdfIn PDF document text
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/543a73dc5095.pdfIn PDF document text
    • https://ditoleruv.weebly.com/uploads/1/3/5/3/135345680/865af9b7520a8.pdfIn PDF document text
    • https://dewuvibemezifo.weebly.com/uploads/1/3/4/7/134763410/4063000.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/bKJJjjq/download_magic_poser_pro_mod_apk.pdfIn PDF document text
    • https://menudobuwowewil.weebly.com/uploads/1/3/4/7/134765252/32658710951.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/CnEu9gi/61499115402.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/simujix/pisepiwamesexav.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/tuwafozobexagir.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/cantina_band_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/84397830591.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/9364809056.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/joruzanolijorananeborobo.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/febovebuwixosoka.pdfIn PDF document text
    • http://xenivut.epizy.com/8689311155.pdfIn PDF document text
    • http://darozux.epizy.com/free_compound_words_worksheets_grade_6.pdfIn PDF document text
    • http://lozufoxozaniso.rf.gd/how_to_set_up_amazon_echo_show_2nd_generation.pdfIn PDF document text
    • http://xeladijigaw.epizy.com/85233329132.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/luper.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/win_10_latest_iso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABC 5208 bytes
SHA-256: d24be13ac5ae9317bea808f0bbf33972336ff4fbe2a6f08050df050e1168bc45
font_01_sfnt_off00011c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5D 10348 bytes
SHA-256: e6f953cabfbc5e06a228fc76eed15c711e2c426bb6ff22cc2932d22dd94a8574
font_02_sfnt_off00013fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FA2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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