Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a1dabc97b0f6ee…

MALICIOUS

PDF

51.3 KB Created: 2020-08-15 04:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e771df146daddf3d868ce34afef2dd8d SHA-1: 2c55f49cb296d7c24122e2e6884ba3a5b252a0b8 SHA-256: 82a1dabc97b0f6eed14160bc2658593348e6f818f431218c902f83550fa33235
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=big+boss+audio+songs++com', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and references 'big boss audio songs com', suggesting a lure for users interested in audio content. The presence of numerous PDF links, many leading to benign Shopify URLs but some to unknown domains, indicates a link farm strategy to obscure the malicious redirector. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=big+boss+audio+songs++com In PDF document text
    • http://domawa.shouqalhudaif.com/uploads/1/3/1/3/131378776/zitorumazi_mujag.pdfIn PDF document text
    • http://nuponu.adidulza.com/uploads/1/3/1/4/131407588/xesajogukudivipixe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/italian_food_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/15451211335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4035/6005/files/junavadopovawasobegifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3789/7383/files/acta_constitutiva_de_una_empresa_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/kakiratimowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/mechanism_of_general_anesthesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/kopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/libinakekatow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0958/0967/files/weather_mobile_al_hourly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3804/6365/files/behavioural_game_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/33876218541.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

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_off00006c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 5320 bytes
SHA-256: fdd559c79afcc7624114901015bdd7f76b26923435914ad8a42eda8e5a38e333
font_01_sfnt_off00007e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E93 14112 bytes
SHA-256: 948cb9efb97dc52c40a7129418de14a20a62df2bd717571cad19a40a2bc5c28f
font_02_sfnt_off0000ab02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB02 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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