Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab579c4707f8b61…

MALICIOUS

PDF

44.9 KB Created: 2020-08-08 01:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2acbcd1a76b997b8c899b0d0da23544d SHA-1: 21d7e0c7892b79339c7cc4940d9bd545a4b41b9f SHA-256: bab579c4707f8b615f2592742d8b1269187897867c2a88960d31062ade45976c
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to salary increases and the malicious URL itself, suggesting a lure to trick users into clicking the link. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=tabela+de+aumento+salarial+2020+mo%25C3%25A7ambique+pdf In PDF document text
    • http://files.jayantiyoga.com/uploads/1/3/2/6/132682585/069e98692213150.pdfIn PDF document text
    • http://paxopoz.littlefeatherfoundation.com/uploads/1/3/0/7/130775735/sitisezowiti.pdfIn PDF document text
    • http://files.bigdoglabradoodles.com/uploads/1/3/2/8/132814096/kodefuvivugixob.pdfIn PDF document text
    • http://files.uusl.net/uploads/1/3/1/4/131408170/1284853.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/1/0429/9938/2170/files/66829415162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/508957232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/ruwawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/bible_commentary_on_the_book_of_genesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/scientific_calculator_ti_84_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/64843624972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/48058718303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/antiderivatives_of_trigonometric_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/excavating_turtle_code_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/rifuvadegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6875 5856 bytes
SHA-256: f0a81386363775921394092afbda5f4ac3d9ac07df61a317d0ffd463ecca8049
font_01_sfnt_off00007c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 13320 bytes
SHA-256: 8a8a3447697e71a442e082b87629cb0682a96a2da26d3dcdf0c7f3dc12762514

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