Malicious PDF — malware analysis report

Static analysis result for SHA-256 0485a016c2935c47…

MALICIOUS

PDF

44.4 KB Created: 2020-08-19 21:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 837536154253018794fc7e67165cb431 SHA-1: 91f701b56aa16f2da2047ab8ef0dcbdda9a21947 SHA-256: 0485a016c2935c471db6579ebcfb28ca316c5ae23a2514d77c4b0b353cbfd66f
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, which in turn leads to a link farm of other PDFs. The primary redirector URL is flagged as malicious and part of an SEO link farm, suggesting a phishing or malware distribution scheme. The document body text, though garbled, contains the lure 'Calendario liga 2020 pdf' and the malicious redirector URL, reinforcing the phishing pretext.

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=calendario+liga+2020+pdf In PDF document text
    • http://files.barrydelivery.com/uploads/1/3/1/6/131607662/a057656b6468951.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/1/0432/2538/3073/files/nimitizomunedixijuxegom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/year_2_maths_problem_solving.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7036/4571/files/the_charioteer_of_delphi_comprehension_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/55070541789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4178/2946/files/74323373287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5091/8310/files/tupapotomilim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/madevidobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3999/4534/files/44979167167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/estimation_and_costing_book_by_rangwala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/benito_juarez_biografia.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 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_off00005a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4A 5212 bytes
SHA-256: 609b4cebbf2529c907a2ad9c4944202cd1c11bf33f343e03462e88d1150b4c6a
font_01_sfnt_off00006c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C11 11092 bytes
SHA-256: 6f3a8fbbe4b62318361c91158652bd7956af6fb9fb653c2b40fea601643a3980
font_02_sfnt_off00009047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9047 16064 bytes
SHA-256: e9cf687b76f137aec67d68831f9d11b8b042d8608c48378d8b0ece48f167d107

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