Malicious PDF — malware analysis report

Static analysis result for SHA-256 1798c66e825dcce1…

MALICIOUS

PDF

37.7 KB Created: 2020-08-20 05:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d49425b181cb3d8d90e162898dbf67bd SHA-1: 4582022ebf3c84ffae9008d03f71dfb598b72943 SHA-256: 1798c66e825dcce131a00b70db10ea8574e2dd3a6306c5d1938eb7a36d2d66c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though obfuscated, includes the text 'Bahawalpur board rechecking form' and the malicious URL, suggesting a phishing lure. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm designed to distribute malicious content.

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=bahawalpur+board+rechecking+form In PDF document text
    • http://sijutad.outoftimedesigns.com/uploads/1/3/1/6/131606289/rajatito_subimulelegulof_favigup_tobot.pdfIn PDF document text
    • http://files.kartzinellab.com/uploads/1/3/0/9/130969225/sularab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17238909339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8376/5662/files/stay_hungry_stay_foolish_steve_jobs_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/puvepiwofenomezovawem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3773/6603/files/coran_en_franais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2791/7974/files/juvofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/50995811152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/ideological_conflict.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/eclipse_shortcuts_java.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 2

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_off00004824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4824 5536 bytes
SHA-256: ddb9b862547913885ee38462bbc2a5fbcd5f93ba7a5d25318bc768a7dbc59045
font_01_sfnt_off00005ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACE 9884 bytes
SHA-256: b20829aa73a47b94726df049f09e55b0b66d4a2b9f561e0a08d9587766582625
font_02_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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