Malicious PDF — malware analysis report

Static analysis result for SHA-256 641bbbe66fa2e1f8…

MALICIOUS

PDF

40.7 KB Created: 2020-08-21 00:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d04512044a169c5a46c4935d51c5ac2e SHA-1: fdbaf0207cebb838c96f91827bbf468919ba0b2d SHA-256: 641bbbe66fa2e1f82e06354afa7f1469c87d9097c3a9a5075a669ac5bace32b4
162 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for potentially harmful content. The document body, though heavily obfuscated, contains a URL that appears to be a lure for movie downloads, aligning with phishing or scam tactics. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL is a high-confidence indicator.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=besharam+movie++mp4moviez In PDF document text
    • http://jugefawed.lenoratrussell.com/uploads/1/3/1/4/131414661/6579635.pdfIn PDF document text
    • http://files.maxeyshouse.com/uploads/1/3/1/3/131383771/nenitavuxiziv_bebamaga_balatukuki.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/1/0433/1284/0862/files/76529590728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5484/5352/files/istqb_dumps_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/carberry_chemical_and_catalytic_reaction_engineering_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/xekinijabenirupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/63078687929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2196/files/56314705576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8801/8594/files/dapimubapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/background_check_mn_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/84381464882.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000546a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546A 4876 bytes
SHA-256: 2c80ed332fddc6cb4568040a1b7eccc7055d8b7aceddbe2fc6ebd23e97bb726d
font_01_sfnt_off00006505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6505 10380 bytes
SHA-256: 20c87ac17fa315390dd5145ff8d7dcf5281bd709cf7bccb7593f7fb89d79fbd1
font_02_sfnt_off0000884c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884C 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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