Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0e3d339fbd2387…

MALICIOUS

PDF

44.3 KB Created: 2020-07-31 09:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffe02fbf62d4bd5709de64cd344a85db SHA-1: c9a17d61a4c6b82cf576e66882c773089beea38d SHA-256: 4f0e3d339fbd238711e922c81a29abb115c432dfee16cdb6464f5b5f323016f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'general chemistry practice test with answers pdf', suggesting a lure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further 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.ru/pify?keyword=general+chemistry+practice+test+with+answers+pdf In PDF document text
    • http://files.salembrewsupply.net/uploads/1/3/0/7/130740255/073530.pdfIn PDF document text
    • http://files.muddyriverhomestead.com/uploads/1/3/2/6/132682142/2235402.pdfIn PDF document text
    • http://files.greenhopefinearts.org/uploads/1/3/0/7/130775647/rutogafilekujar_gagogigopoda_kaxipo_welinozeme.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/1/0434/3031/4133/files/41370894213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/42054549707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3506/4477/files/womezisudirimuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/panezebafaburivotupete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5320/3104/files/24889569259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/92049250886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/towebexinokotonivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/28427075430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/bofikevogeneviwajuseguwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/xudonifipexivigoverefamow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/gekaduruvinunivuxavid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/bogadenu.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_off00006f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5F 5296 bytes
SHA-256: 044d3fba70d0facb18b96e68c95a576512a3071d05f99a09da6a33fac9d2d817
font_01_sfnt_off00008146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8146 10240 bytes
SHA-256: f2a66ea576235271985737d9872f94823a9893dc2471aff96897a4abc21fafda

Open this report in the interactive analyzer, or submit your own file for analysis.