Malicious PDF — malware analysis report

Static analysis result for SHA-256 18971282d7beb201…

MALICIOUS

PDF

42.4 KB Created: 2020-11-01 23:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f8a848831b8992434b12d696d4ec5ec0 SHA-1: 7eab4796ded65c8948251d87d49788cc426cf436 SHA-256: 18971282d7beb201a9af3023324537e4b714cbee1dd9f46544b200d10e5bd6c5
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'https://ttraff.cc/123?keyword=billie+eilish+merch+amazon'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting malicious infrastructure. The presence of numerous links hosted on disposable domains further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.cc/123?keyword=billie+eilish+merch+amazon In PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/1080449.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/kefuvone.pdfIn PDF document text
    • https://bafixexewav.weebly.com/uploads/1/3/4/3/134352321/5842463.pdfIn PDF document text
    • https://sulajaxa.weebly.com/uploads/1/3/4/3/134362611/c5af1276bce467d.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/loduluxadasivik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427501/normal_5f9cb8fc0806a.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://cdn.shopify.com/s/files/1/0500/4689/4240/files/tiguzamuzavigorupid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/2543/9416/files/jntu_kakinada_od_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/pexuliroxawikawaruzeb.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/apqp_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1682/1157/files/92745473702.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6B 4844 bytes
SHA-256: 4d0c0c5a2fe8aca3b58efb627f41c4a7f688c655b3e282f9af1b103f7bd39b18
font_01_sfnt_off00006ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA0 10384 bytes
SHA-256: 1fa894561741edf1216884b8c7c81972482e608048666259d6dc7266ed9855fd
font_02_sfnt_off00008f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F40 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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