Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abd993de4cc52ec…

MALICIOUS

PDF

46.4 KB Created: 2020-08-06 10:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a8982306931152509790a202a521b2f SHA-1: 979bce38fb2cde2b0eb9070578259bd06e46148b SHA-256: 7abd993de4cc52ec08ebd9cdfc9f88fa711bd55f86807941ed1dcbfa0cf8d51b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body and heuristics suggest a lure to download more PDFs, likely as part of a phishing or malware distribution scheme. No scripts were extracted, but the structure and embedded links strongly indicate malicious intent.

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=air+force+last+year+paper+pdf In PDF document text
    • http://files.columbiacounty911.com/uploads/1/3/1/8/131856435/wugebef.pdfIn PDF document text
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdfIn PDF document text
    • http://zexipuz.jencolby.com/uploads/1/3/2/6/132695384/8191049.pdfIn PDF document text
    • http://rekeniton.mickylynnexecutivetouch.com/uploads/1/3/1/3/131380429/fexebotidopo_manakepeb_bimizejuwoxu.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
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/sesaludev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/historia_y_evolucion_de_los_derechos_humanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/formation_word_excel_2020_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/6th_grade_math_test_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/tukosodik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/60196738963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/magic_square_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/verefuwugedisutaxigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/98839708398.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 4924 bytes
SHA-256: de18dcffe39b3b4842e3a41a2390528ff0d885935b01f77bf2a659bbd21d8ddf
font_01_sfnt_off000070be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BE 9948 bytes
SHA-256: a043de7749fc591e6e9d5f6606d06278f4ee0e914c2a90bcba42ea2e88acf118
font_02_sfnt_off000092bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_03_sfnt_off0000a0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BF 2832 bytes
SHA-256: ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891