Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be6dbcc45d3bc45…

MALICIOUS

PDF

217.6 KB Created: 2021-05-06 02:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 932ccfddfa48a52a555107dfac006722 SHA-1: ac9b2a50e218d85df34fde0e45d9d53e35872de3 SHA-256: 5be6dbcc45d3bc456235ec785ddd26a60e607e8e2fc4f9f039343aadd67d300f
156 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 phishing attempt. The document body, though partially corrupted, suggests a lure related to "Adam of the road chapter 21 summary". The primary malicious indicator is the embedded URL pointing to a suspicious domain, likely used for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9839

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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) or Microsoft license-boilerplate 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://druttle.ru/strik?utm_term=adam+of+the+road+chapter+21+summary PDF link annotation
    • https://cdn.sqhk.co/baresupujar/ggjjigT/fitbit_charge_4_bands_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/a1gjuk6/xfinity_prepaid_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/murofoli/jhhjhcB/97990512116.pdfIn PDF document text
    • https://cdn.sqhk.co/neliwuwo/gts0ijU/dirisugipuroxaxezubiw.pdfIn PDF document text
    • http://jafinipu.scienceontheweb.net/89322263300.pdfIn PDF document text
    • https://cdn.sqhk.co/ramazunor/dnMKgcB/afps_airplane_flight_pilot_simulator_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/rjijfXO/free_live_stream_fox_news_zahipedia.pdfIn PDF document text
    • https://cdn.sqhk.co/bujiwamovul/Kii8yW1/59212997051.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/iGSwCmC/silver_dollar_city_season_pass_promo_code.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/7VGhdtj/tezaditopojapadosujoxov.pdfIn PDF document text
    • http://xugaguf.mypressonline.com/zivodipalodemo.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/400c6582-789c-4ee6-a918-f2fe5fede05e/does_swearing_indicate_intelligence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c05c047-2839-4929-8277-b1552c7cf9b3/what_are_the_top_10_strangest_phobias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24782944-ee48-4d6e-8468-df74493c7f7b/67790639392.pdfIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_23ec8311b9054432a7d4b3199a290791.pdf?index=trueIn PDF document text
    • https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_13b0c88b70da4de29bfb319f99478205.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/323e509d-3075-4f16-bd07-519327ff9b90/read_manga_journey_to_the_west.pdfIn PDF document text
    • http://xutenujute.myartsonline.com/biological_science_6e_freeman.pdfIn PDF document text
    • https://677e6977-fc43-48b2-ac81-16e478c8573b.filesusr.com/ugd/3750c2_ec5ad9df41b94ec5a473f655239eeddf.pdf?index=trueIn PDF document text
    • https://93bb5028-8b17-4c47-8ab9-f46a024b0e86.filesusr.com/ugd/041612_1928b87fbf90467191185ce3dc9f4b34.pdf?index=trueIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_cbde9230cae6483e8f23a4b9062c47e3.pdf?index=trueIn PDF document text
    • https://e905a76e-7bc1-418c-be29-e8eda1603e86.filesusr.com/ugd/3fb32a_ce631ce7215445f7ad4295fea4990c61.pdf?index=trueIn PDF document text
    • https://e29a9437-b0a5-48a6-9afa-908397ce514a.filesusr.com/ugd/16a9c1_ee1364c4011048e082d3fa462c19d1d9.pdf?index=trueIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_393334e58a5d4a81a56651e01e1f35e9.pdf?index=trueIn PDF document text
    • https://68f06c25-eb64-4e0a-94e3-a0e33e610147.filesusr.com/ugd/463ace_8e95d0bff7fa49a09df3917e64f09925.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c2550e-4a8f-4771-853f-e1eb96d8fcb1/3d_drucker_anet_a6_vs_a8.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_off000320fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320FA 5640 bytes
SHA-256: c4a3ac1ffbc61d2c1548a8af541611e1e86469614f0e3c545a5c1be95f62ee99
font_01_sfnt_off00033414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33414 10388 bytes
SHA-256: 3c661540aa36e0c1969ddedd60574e1b3dd41d76d1217522c1873c382a9ad417