Malicious PDF — malware analysis report

Static analysis result for SHA-256 1acc178f7aa8e61a…

MALICIOUS

PDF

73.6 KB Created: 2021-02-19 16:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 62ef873b5cc09a850dfa02811f85e82c SHA-1: 149a6a80d38ed492d14373ba044034cda1f52990 SHA-256: 1acc178f7aa8e61a09ef3e3e31fc98fc8e1bf1e856961f521457d071113c68f1
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous links to external websites, many of which are flagged as malicious or part of a link farm. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong intent to redirect users to potentially harmful content. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext, aiming to trick users into interacting further. While no scripts were explicitly extracted, the overall structure and URL findings point towards a malicious document designed for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=information+shield+information+security+policies+made+easy+by+charles+cresson+wood In PDF document text
    • https://cdn.sqhk.co/kavejufa/ibRADgg/wyvern_gem_mhw_kiranico.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387938/normal_5fd902c87c4cf.pdfIn PDF document text
    • https://cdn.sqhk.co/fijumirana/daIGgjb/carmageddon_2_carpocalypse_now_soundtrack.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/gjbmcgc/legends_of_runeterra_new_cards_august.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/jhae529/felumev.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/jhFQghH/70568870178.pdfIn PDF document text
    • https://fuxexitir.weebly.com/uploads/1/3/4/0/134098624/3923be4280304.pdfIn PDF document text
    • https://nobazivikiva.weebly.com/uploads/1/3/0/7/130776215/284974c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380545/normal_5febf4741ac6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404293/normal_60026291a5b9f.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/cjfzohf/81759033447.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473954/normal_5feff5c597d81.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/iehghb5/toilet_checklist_template_free.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/iicji5d/sdge_billing_cycle.pdfIn PDF document text
    • https://cdn.sqhk.co/tobizopowebo/SJibhbQ/european_ice_hockey_news.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/tanimofuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/feliso/kigapikil.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/lufosibel.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_off0000e297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE297 5664 bytes
SHA-256: bda83fc32b2c153302968d813ed8ff7797ca47243ecc7ebe663259f557ba1c69
font_01_sfnt_off0000f5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C3 10184 bytes
SHA-256: 113536a68b9950e22e2bb2b0a58ba4734332c10da968d6acc0c1ad97edc56772

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