Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace38563d3248505…

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 03:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a591ee4da9d67c2eb4b5fc2071f6e4d2 SHA-1: 621010b585ec97a2eed0d76bb436ba143d751127 SHA-256: ace38563d3248505ea73b604298089c73717f48085ae930ef78117f09d576e92
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to ttraff.cc, a known malicious domain. The document body, though heavily obfuscated, contains the same malicious URL. This indicates the primary purpose is to redirect the user to malicious content. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation to increase visibility.

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=bond+energy+calculation+pdf In PDF document text
    • http://files.sahasrashope.com.au/uploads/1/3/2/6/132681028/8734766.pdfIn PDF document text
    • http://mubebarip.bluechillithai.co/uploads/1/3/1/4/131437462/1573667.pdfIn PDF document text
    • http://files.charteredengineers.org/uploads/1/3/2/7/132712508/6ae92.pdfIn PDF document text
    • http://files.elccauction.com/uploads/1/3/0/7/130740141/kepukuxo-kobipumefubuw.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/1/0436/8993/5003/files/cute_halloween_coloring_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3097/7434/files/33160433701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5213/7625/files/char_broil_big_easy_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4663/2614/files/wiwufaruzakifesuramunili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/sora_anti_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7270/files/89482686626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/64141771228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/std_12_ncert_biology_textbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/43894192036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6137/9221/files/nokowatiwevivubopave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/tuxeruvaluvusaxis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/sidobuwupalikaxutikax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/gominadesoganufabagawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 5296 bytes
SHA-256: 7fb9bade5a1d435492fc786faa1e0514f92a0e857d333a26c8076e4e5d717560
font_01_sfnt_off000076d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F65 10712 bytes
SHA-256: 95fa6d5c7a63e0a58542989157b2c32a93d428ef56b04de59da4b8b42346e7c8