Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb0604227f90fe5…

MALICIOUS

PDF

162.4 KB Created: 2020-11-24 00:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 32e8953aa785d0368ef645f62ec60c1d SHA-1: 166af35013e274c255d6bdb62df54cd8aa17ed44 SHA-256: bfb0604227f90fe503e34fcfaa75d985619cabdbb38c55b613776c59b32844d5
124 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The document body, though heavily obfuscated, appears to reference '2016 nissan pathfinder sv manual', suggesting a lure to trick users into clicking the malicious link. The presence of multiple links on disposable hosting further supports a malicious intent to distribute further payloads or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 4

  • 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 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.
  • 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://ggtraff.ru/strik?utm_term=2016+nissan+pathfinder+sv+manual In PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/5938510.pdfIn PDF document text
    • https://sisumojixidew.weebly.com/uploads/1/3/4/3/134355683/7d5aa8265.pdfIn PDF document text
    • https://lugonuwazufat.weebly.com/uploads/1/3/4/6/134673331/zebigexu_kefevux_nulofenavitiwat_tanabukuji.pdfIn PDF document text
    • https://nifazupu.weebly.com/uploads/1/3/4/5/134507595/1d701b09b2.pdfIn PDF document text
    • https://vexofemefenulo.weebly.com/uploads/1/3/4/5/134594555/dusikemimejoge-nojagujavumi-worogiv-xezosowotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413846/normal_5fbc314f51ee8.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/felasorarabipis/rekefowodikajobaxofokulop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66e0793d-fb07-401c-a615-3d2455530175/13100902848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c71698-24c9-4a3d-9754-b96ffa472d9d/496519863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d703b05-d5c6-4fee-a7e1-3ad38943fd71/67665879068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da9a6e27-589d-4aa2-b59e-e3f927e5bf99/filmywap_2016_bollywood_movies_sultan_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7aa3ff7-24d2-4f5e-b658-044eece5df64/el_solitario_horacio_quiroga_caracte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d82012-ee15-46c3-8301-864ecc9ad246/towowozajubetejul.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00025186.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x25186 23892 bytes
SHA-256: 4888d024642a1092dcee21a46ea8470cb9547e54986e59aceb7e9c6c2b3aaac2
font_00_sfnt_off00020aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20AA3 5724 bytes
SHA-256: 017c2b12f5749ccfdadd99667b7c1acb595c51eb702e51851fa52d194ad1ab4c
font_01_sfnt_off00021e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21E06 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00022969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22969 11844 bytes
SHA-256: 6e24cb1b1a590008f9fb746b00175ba4073b86368f5bb7732040850d3ea39625

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