Malicious PDF — malware analysis report

Static analysis result for SHA-256 afddd0a1cb158247…

MALICIOUS

PDF

51.0 KB Created: 2020-08-08 11:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c287e09e98d7975512403ff6b2e3c4a9 SHA-1: 6f4cbc4db1532b58be785b6d46f168494b4671e4 SHA-256: afddd0a1cb1582474e80655adcdbf782e1731e220276381fab48120a8c7f21d7
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a download for 'Sbi bank exam books pdf download'. The ML classifier strongly indicates maliciousness. The embedded URL is part of a link farm designed to manipulate search engine results, ultimately leading to the malicious redirector.

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=sbi+bank+exam+books+pdf+download In PDF document text
    • http://files.liberationgifts.com/uploads/1/3/0/8/130874655/fepupekubevage.pdfIn PDF document text
    • http://files.oakridgevillage.org/uploads/1/3/0/8/130874655/todox-pejabewefereko-xanuxirorar.pdfIn PDF document text
    • http://pegux.jodirenshaw.com/uploads/1/3/0/7/130775934/varuv.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/1/0432/6211/6008/files/24628563526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7802/9213/files/chain_rule_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/loki_s_vault_of_borrowed_items.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/flow_cytometry_protocols_hawley.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/wopeboxatavoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/91115565180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/xorufimemozawizijuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/active_causative_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4687/8882/files/34804324962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/online_application_form_1093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1207/files/1660393583.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 6

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_off00008a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A40 5556 bytes
SHA-256: 25be154cdad21e574172b12eed1ec8530cf7e85bdcf290964999d9b1ab655f4b
font_01_sfnt_off00009d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D31 9900 bytes
SHA-256: 9047ca01befcc5f1f067105a2289a48be622c751af06dc3f11e451c326342049

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