Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2ff40bb03ea8cd…

MALICIOUS

PDF

72.3 KB Created: 2021-04-09 00:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c5858bae8ed47435a7589a550b2e589 SHA-1: 415f36ac6825112691131877a636604057f04e0b SHA-256: aa2ff40bb03ea8cdbbfb6bfc1acf5397a27b3db76059a8fbc41100946ca8425e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a site that appears to be related to streaming a movie, likely a lure. ClamAV also detected this file as a phishing trojan. No scripts were extracted, but the structure suggests a malicious document intended to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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/strik?utm_term=fantastic+beasts+and+where+to+find+them+2+streaming
    • http://mivifukatovaga.getenjoyment.net/tubojawodafatifekovadawof.pdf
    • https://lirukasuk.weebly.com/uploads/1/3/0/7/130739032/79078bbc52.pdf
    • https://cdn-cms.f-static.net/uploads/4447903/normal_603ab60b3ed09.pdf
    • https://rotowoboragidak.weebly.com/uploads/1/3/4/5/134508058/xexaxil_jumak.pdf
    • https://cdn-cms.f-static.net/uploads/4450158/normal_6031087bd0f0f.pdf
    • http://vizexibidoxi.getenjoyment.net/android_studio_tutorial_for_beginners_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_1b359b64b5074370972d60d3137db90f.pdf?index=true
    • https://58eafb2e-ea74-4523-a1b2-d2e0fe9bfe54.filesusr.com/ugd/466fa0_963e13fe69df4941a5e4799ef341e762.pdf?index=true
    • https://0a01f052-6ee6-4bfa-868d-d2e49373b03f.filesusr.com/ugd/55f640_a2a7813f3b3d4a729b72baf1bca96aa5.pdf?index=true
    • http://jetotajasavesi.atwebpages.com/design_patterns_c_with_examples.pdf
    • https://uploads.strikinglycdn.com/files/c68bd21b-4b9e-46f6-9d98-f9e829fac8db/72867607649.pdf
    • https://uploads.strikinglycdn.com/files/537993f8-8ed8-4833-ab5e-da2fa570de90/remote_code_for_sharp_tv_comcast.pdf
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_5c8a4e5398b84af98e9ce6c1f003fb30.pdf?index=true
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_f33ac52f0e1541b3887844bb6aeb148a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3e179396-4d9e-4a18-a2c0-e4c77e142bb0/first_aid_text_book.pdf
    • https://uploads.strikinglycdn.com/files/b7120008-d5f0-4161-a821-4b98c7d06346/how_to_black_and_decker_coffee_maker.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ced1.bin
9e7d70213f0fe39d279b8a7458ac805af050abcfa2dc4a2dd08a2a2a1da2d772		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 5512 bytes
font_01_sfnt_off0000e16f.bin
eb7ed9f96fff1a399aa0a36d8f301221dc93036121785d833bf16987b6cfc436		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 10692 bytes
font_02_sfnt_off000105e0.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105E0 4324 bytes

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