Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b31665d788dff5e…

MALICIOUS

PDF

38.4 KB Created: 2020-08-21 22:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57b0e989b6b95e63f77ad4d02c64d0cd SHA-1: cea26546c40c88ebf20afe8f6caaa441df6b6407 SHA-256: 0b31665d788dff5e7e481dc35d3c4778b421c01294204704c3ee11d054e723c4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though obfuscated, includes the primary malicious URL, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of multiple external links points towards an attempt to drive traffic to malicious sites, likely for further exploitation or credential harvesting.

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=abou+shakra+restaurant+case+study+answer In PDF document text
    • http://files.leadthewayonline.com/uploads/1/3/2/7/132740498/debigilupovalejalili.pdfIn PDF document text
    • http://files.fourarrows-ranch.com/uploads/1/3/2/6/132681556/xudejelewofili-xikevipujalox-gizikuvaguke.pdfIn PDF document text
    • http://files.stpeterslimpsfield.org/uploads/1/3/1/6/131637219/7520145.pdfIn PDF document text
    • http://solunetus.standbyme2019-2021.org/uploads/1/3/1/4/131407711/posoporeril_todil_wewawupariguxe.pdfIn PDF document text
    • http://files.danielmckeon.net/uploads/1/3/1/4/131438180/7565198.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/1/0432/0614/8255/files/online_travel_agency_market.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/minecraft_how_to_tp_to_coords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0505/6920/files/sql_server_database_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3057/5266/files/3915608940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6087/9772/files/retikiresegubakubufok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6207/files/chick_fil_a_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/jikupewuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/65723145986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1408/files/ganpati_atharvashirsha_meaning_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1517/1236/files/80920751006.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_off0000576d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x576D 5384 bytes
SHA-256: 69ae8a97b64d53d56f2ec8bd664a6f3150cc0a3399c10f2e1eaf3a2e41f55137
font_01_sfnt_off000069c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C2 10176 bytes
SHA-256: 847ef7b307aca71da0231a17acdf1a16af2816e3ac7e9f85c56a95c945c53633

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