Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4b3d281ebfa23f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-15 01:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d09d9c1873de5b88ceb903ae9ddfaba3 SHA-1: 4d54d7341133048af2c95841581d52f32de7c07c SHA-256: 2b4b3d281ebfa23fc3dfb551e9158aba31dbc232d73879f2311d63dc9e5ee5bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, many pointing to a redirector infrastructure identified as malicious. The document body, though partially corrupted, includes a URL that appears to be a lure for a 'Lowrance hds 12 touch manual'. This suggests a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial access vector. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=lowrance%20hds%2012%20touch%20manual In PDF document text
    • http://files.millcreekroofingtx.com/uploads/1/3/1/0/131070231/pavusizuw.pdfIn PDF document text
    • http://motapevag.southfloridabaza.org/uploads/1/3/1/6/131636664/50a1f94e.pdfIn PDF document text
    • http://files.teamrehab.uk/uploads/1/3/1/4/131407849/fogasulobebetokibu.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/1/0428/1411/1903/files/balidibazazumubovusit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/write_source_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/ano_ang_kultura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/hi_ho_b_rogers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/kinetic_and_potential_energy_worksheet_energy_transfer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/76231820738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/lofijejobekawanubasezas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/nasunezirig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/taxijejirapotanof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/56966633256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6931/files/rewiziwapuzejerina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/wujuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.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 5

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_off000061c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C8 5396 bytes
SHA-256: 2676e83aa528b8d43204a56c312d3ac12592764c39dbdbccbd08e0906b624eac
font_01_sfnt_off00007403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7403 10128 bytes
SHA-256: a3b58e99db3fe843ffdbf46c5f5482942bde2fe561778647f7b335a4a3712452

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