Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2605933ac8e547…

MALICIOUS

PDF

48.5 KB Created: 2020-10-11 23:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4cd853cbb7c6b3ecaf4e9cb0d676a202 SHA-1: e7d07c0417fa215e29312194b96383c51d83787a SHA-256: 6e2605933ac8e5477bf05a51f69868346281adca3e7eea2b1c61612e0cb0e8fb
184 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to disposable domains and redirectors, indicating a link farm designed to distribute malicious content. One critical heuristic identified links to known malicious redirector infrastructure. The document body, though partially obfuscated, contains a URL that is also present in the list of external links, reinforcing the malicious intent.

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.club/pify?keyword=shy+and+socially+awkward+meme In PDF document text
    • http://vavevikix.barrongafford.org/uploads/1/3/1/3/131398097/gilodufa.pdfIn PDF document text
    • http://menuse.siamthaispaandbeautycardiff.com/uploads/1/3/0/7/130739573/de061e35534.pdfIn PDF document text
    • http://wugewe.westannaboutique.com/uploads/1/3/1/3/131384613/f6f65ba.pdfIn PDF document text
    • http://files.kivistocarwash.com/uploads/1/3/1/6/131607407/57421.pdfIn PDF document text
    • http://files.nlcs-promisetown.com/uploads/1/3/2/8/132815903/xuxenazeme-laxofabokus-nomaz.pdfIn PDF document text
    • https://site-1039707.mozfiles.com/files/1039707/77770856376.pdfIn PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/69003289935.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/fd255594-0d29-4507-bbc6-14fdaee0999b/32933236193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f10c769-6bc7-4974-bac3-f0c524284076/45460366927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195b6b1d-d62e-4a1b-a6ce-81fe103e1cd3/49204887082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691e0178-2273-4879-97b0-f905de84bbf8/36703609075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8479b6-c93b-492e-b892-a0af919e9806/kiwidavufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ed41b9-e528-42bd-8b63-315b3ba00cb8/zowejalunijasufidude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdfe59f2-528c-4bf1-88d0-937234dace30/bubojotopazatusarepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7110595-e787-4128-b147-2d341208cc7b/86445580511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71268a59-0ffc-449e-8a32-58e72c6f25c3/bejevizaxazaloturatir.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_off00007dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCB 5540 bytes
SHA-256: 96db47b7591a5f4509e4bd5622ad23010d81e798b3c7ed0c65fafdcaf313a9b8
font_01_sfnt_off00009082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9082 10956 bytes
SHA-256: 09c820bcd9e47c5b645338b28ebe94350b647566dd70feb38b2f2db7836e6541

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