Malicious PDF — malware analysis report

Static analysis result for SHA-256 60699d3144b3b68d…

MALICIOUS

PDF

83.0 KB Created: 2021-05-07 20:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c5ec85d6ef413d20bf2edfcf61716105 SHA-1: e71eb57eb8a7e6d1c1088d4a7b35e6624c38d20d SHA-256: 60699d3144b3b68db6917d2f5dddca45dd6453036432912799e3365365b01b9e
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=how+to+set+up+cateye+velo+8 PDF link annotation
    • https://cdn.sqhk.co/goberirud/GgfNJb9/92895261998.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/Qih7his/8711084307.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedevatas/TibUjbW/tamil_fm_radio_online_play.pdfIn PDF document text
    • http://gimatadokij.mygamesonline.org/netgear_dgn2200_setup.pdfIn PDF document text
    • http://lugirepapirizo.scienceontheweb.net/transversus_abdominis_activation.pdfIn PDF document text
    • https://cdn.sqhk.co/dufubimaru/aejgjiP/tatawuzelus.pdfIn PDF document text
    • http://naliputa.mywebcommunity.org/74614638754.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_60ec64cc01a2402db9a23804a3818e44.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f06e8b-88e3-41b1-8ce7-3dc8fd020267/gtx_970_vs_1060_laptop.pdfIn PDF document text
    • http://tiredosutozol.atwebpages.com/uba_aptitude_test_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bdd96f5-d6c0-41fa-a2f8-c15601235d35/25463553344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4365f53d-94a4-4cbe-94ba-68ed40a4f266/89511725295.pdfIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_3d0b120c6af74799833e5500bfdd83e6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/922a8db4-590d-44df-8eb8-78551e4f3268/sumaverojijileti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70844c11-96f4-4f40-ad8a-070513d6053b/dayton_battery_charger.pdfIn PDF document text
    • https://c84ffda1-e72a-45fa-8ce8-a771970cf326.filesusr.com/ugd/9fd656_6526e15e26404302b68c15639e9b50eb.pdf?index=trueIn PDF document text
    • http://bopisumeku.atwebpages.com/carel_ir33_manual_parameters.pdfIn PDF document text
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_04c7450ddf1c414ca21dccadd5cac9d9.pdf?index=trueIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_bd68f42f1ce046de858b5bbe88b6f7a0.pdf?index=trueIn PDF document text
    • http://jeborawaleko.atwebpages.com/briggs_and_stratton_500_series_158cc_manual.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_off00010298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10298 5240 bytes
SHA-256: f236fe27667b6a6c600d03e464e0e7f65813d2b85b685037b20433e2bcea0d51
font_01_sfnt_off0001149c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149C 12404 bytes
SHA-256: 9110bc65dc38bf19fd25a7c5198b934cffdb319853d45f4f769b98766bcbee4e