Malicious PDF — malware analysis report

Static analysis result for SHA-256 3940d36636ed972e…

MALICIOUS

PDF

67.3 KB Created: 2020-09-12 07:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 909a5f9c1315c6e112e8cb23873bcacb SHA-1: e289f0192f3f4613bb0b68d8a096cf95b99468dd SHA-256: 3940d36636ed972e1ae8b6f00babee36cd249244d5b9216af0f70fad37cfa17e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.link/pify?keyword=belkin+n300+range+extender+f9k1015v1+manual In PDF document text
    • http://jifif.frederickbell.org/uploads/1/3/0/7/130740592/1211867.pdfIn PDF document text
    • http://laguner.garyscollision.com/uploads/1/3/2/8/132814930/selagezakusirasofa.pdfIn PDF document text
    • http://zipabe.brahmamusic.org/uploads/1/3/1/3/131380729/xakizeni-tipex-fugezegisav-juwanibo.pdfIn PDF document text
    • http://vetol.janabrodkin.com/uploads/1/3/1/3/131381762/494d3706d658e.pdfIn PDF document text
    • http://files.woodbrookhuntponyclub.com/uploads/1/3/0/7/130775373/xisobagonoguza_purox_pudolad.pdfIn PDF document text
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdfIn PDF document text
    • http://xewazexi.integratedhealthcorporation.com/uploads/1/3/1/4/131452845/suvidigomajinaj_pepeb_buvemufa_kekiju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/40336e_9aacca67bcdd448da98775b7d9598c73.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/37321e_9a223e5eed0e445abc3d304603967d8a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/762c1a_29a4450f7f054a8fa8d0b987fa5e8525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/candide_voltaire_arabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/wufidara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/vivir_mi_vida_marc_anthony_lyric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/weather_report_vietnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/vumoxisolafu.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_off0000c752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC752 5928 bytes
SHA-256: 2ce5d4f85b77d4b21f96eef6c5dce2e26b478b10b9a847aaa44f3cb11931c8ff
font_01_sfnt_off0000db8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8C 10680 bytes
SHA-256: b42faa4e61bd3bf7670d02d43ee6c882e9b0a00bce19ccffa1fd7d3dbbf6c981

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