Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1499ab23179156…

MALICIOUS

PDF

38.5 KB Created: 2020-08-25 17:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e67d01447f952dcf9e4c447285533ba1 SHA-1: 2996275cd431deca6f25ac546af12f29cfc34280 SHA-256: 9c1499ab2317915606999f857a284709257dad81585512f2b4e9641a181a54b3
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.ru', suggesting a phishing or malware distribution lure. The document body text, though heavily obfuscated, contains keywords like 'Bhoomi song bestwap' and references to wkhtmltopdf, indicating an attempt to disguise the malicious intent as a song download. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful content.

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.ru/pify?keyword=bhoomi+song++bestwap In PDF document text
    • http://files.sm4g.net/uploads/1/3/1/4/131438071/pujematetuvamadot.pdfIn PDF document text
    • http://kemejebox.caryncarlone.com/uploads/1/3/1/4/131437987/vutewaku_zadegepis_dadibot.pdfIn PDF document text
    • http://files.capripta.com/uploads/1/3/0/9/130969717/zadizulupozu.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/1/0431/8255/5297/files/vipusopakiputipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/vunevevenopinisibobofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/pemobar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/zewapuloledigigamavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/manual_accounting_system_vs_computerized_accounting_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8522/6393/files/salawijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/xotetaxedojibigavipuworeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/difference_between_parametric_and_nonparametric_statistical_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/89523482805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/36425804487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/luzamev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/zamigubetebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/blockchain_beyond_bitcoin.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
🗂 Part of campaign: capripta.com 4 samples

Related samples 3

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_off00004b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0B 5176 bytes
SHA-256: e74c1745ce66b794d1cf616d41d293cdddfd0ab7f61821cffaedf933f6fce1fd
font_01_sfnt_off00005c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 10168 bytes
SHA-256: 8906247fcfd8533d71cd5ebbb23358f78b89143005aecbb6496e66f804c4e48c
font_02_sfnt_off00007f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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