Malicious PDF — malware analysis report

Static analysis result for SHA-256 388e7a5c8d0937e6…

MALICIOUS

PDF

35.3 KB Created: 2020-08-10 07:20:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5a20ce8f2ff4ee03d898ac0e5bbc958 SHA-1: f8e8cf7b2cd2cbce09eab2f24f745eb082f58361 SHA-256: 388e7a5c8d0937e698cf3c01f6b3cb25ac9b805dbed9662203b6c817be1bb024
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=cracking+the+code+third+edition+pdf'. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or credential harvesting. The ML classifier strongly supports the malicious verdict.

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=cracking+the+code+third+edition+pdf In PDF document text
    • http://files.undividedla.com/uploads/1/3/1/0/131070169/0ad607053ca.pdfIn PDF document text
    • http://tuvunizod.llanitollanito.com/uploads/1/3/2/8/132814930/2581568.pdfIn PDF document text
    • http://files.mariaverrier.com/uploads/1/3/2/6/132695543/3042e7f373ddae5.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/1/0430/6881/7569/files/13866114848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/xiketapovus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0757/9036/files/blast_furnace_details.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/xelufuzakuzuwawuzozujiruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/kolepomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/courriel_web_videotron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/intermediate_financial_management_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/yamaha_rx_v479_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/58252903161.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_off00004cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDE 5176 bytes
SHA-256: fa62d4d87522d4d2f5918ae5242ae7462cac1b6c065cf6dfca5a636ca80d7f2b
font_01_sfnt_off00005e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 9992 bytes
SHA-256: 6f01fa333489ec0c1b3cbed3aec966a56840689133e8f3014a5f3f4d84171643

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