Malicious PDF — malware analysis report

Static analysis result for SHA-256 898c3d54db289402…

MALICIOUS

PDF

49.1 KB Created: 2020-10-29 21:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3ff8e3751f05bfc1a70b2d681697d11e SHA-1: 2603709095ec5322b2da735fa6227f61ce462884 SHA-256: 898c3d54db2894024500000395a6915cde370bf8a6c4cc57fc716801a074071a
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link that redirects to a malicious URL, identified by multiple heuristics as a redirector for phishing or malware distribution. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it is the primary lure. No scripts were extracted, but the presence of a malicious redirector indicates a phishing attempt to lure users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=california+cadet+corps+uniform In PDF document text
    • https://nujamoxe.weebly.com/uploads/1/3/4/2/134234607/muxanetixesen-mefimizomazej-fuxunotevema-konamuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c9587b-fdaa-424b-858e-9debb2c7ba95/11023424579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7184/6582/files/jiwesid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac1f1c82-07d0-47de-988d-cd7c653dd493/24101252470.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/alphabet_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/5776/4253/files/shelby_county_tag_renewal_mullins_station.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/patugitumumonezunamej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2349/7877/files/harpa_crist_cifra_simplificada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0681/0050/files/56643010756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4395/5098/files/kepolalididifabamojeve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c28878-59e8-4600-9c5f-f4661328b01c/308149858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17fd35b5-f841-4fb3-94a3-1a1caf234b81/wawaweguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/1637/7277/files/tolerance_by_em_forster_introduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/0697/2832/files/82924349921.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 3

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_off00007e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E45 5208 bytes
SHA-256: 8549900f8ca89fd45596de603dd275b14cac4aec7e8cffa8fa0534f5b8377e70
font_01_sfnt_off00008fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE2 12064 bytes
SHA-256: b6aa5dcd4dc743e035db6cb753c6812b6c440b151364eeae1665dc84dc1451ab

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