Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62dc180bac8d694…

MALICIOUS

PDF

77.9 KB Created: 2020-12-20 20:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cfe80404ca5a84e8198eeb9e536671da SHA-1: 92e79876b39bc256642568d8511e193bf486e306 SHA-256: b62dc180bac8d6940a35e1cd1e53d578d7ec33a455cc0a0c3757ef40440d66bb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external links, including one pointing to 'traffnew.ru', suggests a phishing or link-farming attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://traffnew.ru/aws?utm_term=the+law+officer%2527+s+pocket+manual+2017 PDF link annotation
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/vivizerefume-tusatonotez.pdfIn PDF document text
    • https://sofasiwo.weebly.com/uploads/1/3/4/3/134319993/fawawexesos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f89d1ecc2a0a.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://uploads.strikinglycdn.com/files/4754cb1e-494a-46a2-ab99-6084061c7ed0/spring_break_topless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde9aa5e-3b70-4813-9482-a4c125adef8f/15795395969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bdbc047-fac5-46d7-baad-043b468cf385/26888888866.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/algebra_2_math_problems_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80913daf-5ce1-42eb-b62e-bf7042132e2e/string_curtains_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f34bdf6-a314-4623-b18c-63f5f7a1589e/57714722737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/010c0d9d-b0ec-4831-84fc-0608dc263a71/detunizuduzuloxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea9a81b-ff96-4649-b8fb-5505a9ac5290/52033773669.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF59 5680 bytes
SHA-256: 0c057b7a5f0d4cd874cadbd0b2735db3de3d988daa95d4f457da28aead7d687b
font_01_sfnt_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 4920 bytes
SHA-256: 297db96b28a4996c0f0f06abc038d3aba282f404eaef5b94f54e7ce4e535e297
font_02_sfnt_off0000e2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BA 10388 bytes
SHA-256: e5ce3e9c3c9a3bf72438237f0898f87d3a5a750b40f2083a192ded3f3e62d0c3
font_03_sfnt_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 16372 bytes
SHA-256: bc9d133518941f041cda1c8718e2472003d4da34dbfa742e3922751444972331
font_04_sfnt_off00011c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C05 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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