Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f085c8863a4b08…

MALICIOUS

PDF

40.4 KB Created: 2020-08-06 08:39:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b56d809483b1069f6e3ed536b122800 SHA-1: 2fd73202000533d5c361cfe4aa83d530aa80a459 SHA-256: 89f085c8863a4b081a6584dce08f2f80a2257e95b4a2229e29240412f0513c22
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body and embedded links suggest a lure related to academic material, aiming to trick users into visiting malicious sites. The presence of a link farm further indicates malicious intent.

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=design+and+analysis+of+algorithms+mcq+pdf In PDF document text
    • http://files.orangecongregationalchurchnurseryschool.com/uploads/1/3/2/7/132740423/edda32f93afd.pdfIn PDF document text
    • http://files.gettingtogethernow.com/uploads/1/3/1/4/131409909/gejebujevijome-buvarutulowubib-lasovekazotub-gupifewawatepop.pdfIn PDF document text
    • http://josuv.inspirationafloat.co.uk/uploads/1/3/1/4/131407067/zelejiv-satowobugo-dowexelegulajo.pdfIn PDF document text
    • http://files.ghoddousi.com/uploads/1/3/1/3/131379820/1424354.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/1/0431/0741/8273/files/benilamefiropiwuzodonej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/paligujanake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/bbc_compacta_class_12_english_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/webcal_mlb_am_tix_cubs_schedule_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5637/9557/files/pmgdisha_affidavit_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/e2_80_9cdreb1e_e2_80_9d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/79132557323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/96215698437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/fupofozaresanurunufulasen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/boston_university_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tabaliwakudinugevazevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/modoxamirumaturafukafew.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 8

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_off00005e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E07 5796 bytes
SHA-256: 1d4ad91d01c131ec27d802ccc02a061dd598c6ebb2dc946038af0be9812ecebe
font_01_sfnt_off0000719e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719E 10244 bytes
SHA-256: f66015037303fcd15e46319140c0d66ce4c47d9e03d8c7b8d4a9d2aa0388c7eb

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