Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc233a1407b7ba7…

MALICIOUS

PDF

63.4 KB Created: 2020-08-14 22:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cae6390db73af49857f9a15f646ec4d0 SHA-1: 6a160b66163aa2298ffc16f62fc28e9c9958e7de SHA-256: edc233a1407b7ba7191df58efa3692813893ac29108d368873521d1cf9132cd8
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though corrupted, appears to reference '2nd grade geometry worksheets free printable', a common lure for SEO spam. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=2nd+grade+geometry+worksheets+free+printable In PDF document text
    • http://files.bjbeautifulthings.com/uploads/1/3/0/9/130969428/5b7da.pdfIn PDF document text
    • http://ledija.sanantoniohardwoodfloors.com/uploads/1/3/0/9/130969873/wazezowu_difuropotulofa_fawosadiwuzoziv.pdfIn PDF document text
    • http://files.livingrockchurchseverance.org/uploads/1/3/1/4/131452904/bidagufegamajigof.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/1/0437/3767/7985/files/8186030061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/lezixevokegozose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/causes_of_epilepsy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/81584195059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1817/3086/files/71795568470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/cat_ascii_art.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/autoformation_windev_mobile_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/javutukepadoroketokekom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/98604069132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/90821806629.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC52 5680 bytes
SHA-256: e855eff6729efc6e450a0531f9d0ea3425289dbb70375d7caa10de0744d2098a
font_01_sfnt_off0000bf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7A 10248 bytes
SHA-256: c442d31a0b0371afaa0545f07c0d1449a8a01958cbadbb0146f81d02227e21c3
font_02_sfnt_off0000e269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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