Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4231b5c56e53f4…

MALICIOUS

PDF

56.5 KB Created: 2020-08-06 23:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5abd3216c1f512fc462cf821d8dd347 SHA-1: f7ff5af0e52e9accb1bc1be3daa3fa7892fa8424 SHA-256: bb4231b5c56e53f4b106d4e1f957957347ae9177375d4f30d219b17257af4af8
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The presence of a large link farm suggests an attempt at SEO manipulation or driving traffic to malicious sites. 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.com/pify?keyword=thariqah+alawiyah+pdf In PDF document text
    • http://files.sarahrorvig.com/uploads/1/3/1/6/131606465/d065f105e1cf174.pdfIn PDF document text
    • http://files.wildthistlejewelry.com/uploads/1/3/1/4/131406811/sarenatukuvile_jolitunowa_pofovututo_bifafofu.pdfIn PDF document text
    • http://files.ignite-your-purpose.com/uploads/1/3/1/4/131412558/rafewijubi-nivezode-komewisalunewe.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/1/0431/1918/1978/files/sears_roto_spader_785_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/29557068870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/ipfw_student_webmail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/19943406227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1537/files/graphic_design_tutorial_bangla_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5435/7915/files/wastewater_treatment_plant_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/88843872425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/zevuwebanupaxanasatajop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/cub_cadet_1042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/bayesian_networks_and_decision_graphs_jensen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2332/files/suwezinumulusivibe.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_off00007ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCF 5220 bytes
SHA-256: deb963fd53cbc21986445377212cabdf3d9958ff37cf0013acc5f592d15ae714
font_01_sfnt_off00008ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 10276 bytes
SHA-256: cb5a5d277a99f79da43cecb2cc68322067f7ff173244c4d95d69015d9ba42868
font_02_sfnt_off0000b1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C8 20776 bytes
SHA-256: 8917906e50cd1a6ef8165fd2b995029b5a45228a6e7f00cd4b7db5395884e17d

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