Malicious PDF — malware analysis report

Static analysis result for SHA-256 9defb143a6d91ac0…

MALICIOUS

PDF

43.5 KB Created: 2020-10-14 23:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 818533880d8277da761c14fc422a3b68 SHA-1: e926bef3d3e510aaf5635dd52c67a7078053248a SHA-256: 9defb143a6d91ac07e181e4fd92469186a157a1bf97ec0db976bd04c16722984
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/pify?keyword=cisco+router+setup+guide In PDF document text
    • https://site-1038835.mozfiles.com/files/1038835/tekunegajuka.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/17479319263.pdfIn PDF document text
    • https://site-1039214.mozfiles.com/files/1039214/pegubapiruruleruwumid.pdfIn PDF document text
    • https://site-1040398.mozfiles.com/files/1040398/65293663592.pdfIn PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/xabujuxanogunekidubimemo.pdfIn PDF document text
    • https://site-1038493.mozfiles.com/files/1038493/jozidojo.pdfIn PDF document text
    • https://site-1041684.mozfiles.com/files/1041684/10631448802.pdfIn PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/fatovunedas.pdfIn PDF document text
    • https://site-1040339.mozfiles.com/files/1040339/zabesulil.pdfIn PDF document text
    • https://site-1043459.mozfiles.com/files/1043459/60807425657.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/7989682.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/c76c3672.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/8d959c.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/2c41886a7012.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d64cbd-441c-46be-b195-ba96aa318de7/21036007370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079bbbd3-d20e-49a6-b8ad-4b280721371d/tipikeliwizilukuxosenazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb7a297a-eb44-44cb-88a0-5f26a5bb04ab/32314080038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72dd19d2-e00b-44e9-88d9-2fcc654606d5/720362505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/260b1a7b-1a19-4522-931a-73b068357479/76186496869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/jump_force_open_beta_times.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/fodobexijeked.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF4 4904 bytes
SHA-256: 6e73fdcfef64ff42e76dce333b2de2bb4d54f16fa80f3a20a438d9cd9a421f02
font_01_sfnt_off00007dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAC 10208 bytes
SHA-256: 0eae48a2a27f181b43e8c79229bc9311c808c866de2d547597ff670b0a25accb

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