Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a63e3d3eb7b23c…

MALICIOUS

PDF

50.5 KB Created: 2020-08-11 15:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d79228a163ca136c18fa6ee2e101cd46 SHA-1: 4b97073004aa134e521abe07b430cae0a15a8778 SHA-256: 11a63e3d3eb7b23c9758536fa944a4d3b90d019981d3952d9fd5b26a1e79e82c
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt disguised as a document download. The ML classifier strongly flagged this PDF as malicious. The embedded URLs, particularly the redirector `https://ttraff.cc/wb?keyword=management%20accounting%20horngren%20pdf`, are designed to lead users to potentially harmful content.

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/wb?keyword=management%20accounting%20horngren%20pdf In PDF document text
    • http://files.dynastyenergyservices.net/uploads/1/3/2/7/132740378/c1b115f482.pdfIn PDF document text
    • http://files.youthactionmemphis.com/uploads/1/3/1/6/131607321/kinuvexenugawagewefa.pdfIn PDF document text
    • http://files.lco-team.com/uploads/1/3/0/7/130776200/vupowilono.pdfIn PDF document text
    • http://gasak.maryheskel.com/uploads/1/3/1/4/131482975/7888c.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/1/0449/6569/1560/files/49746660262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/remove_suggestions_from_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/brainwashed_sally_satel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/32703795154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/dugiturokunuzujekuterile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/25712485168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/99495336010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/69848955213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/nazuximusijimiwarav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/zefitikolevofijotuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/821130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/acca_f9_revision_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/mercury_90hp_2_stroke_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/lejafenofomi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D7 5364 bytes
SHA-256: 822b67f41dddd9e9c59617ef1ad45dfc21332f71123452e8b53d1d2584622335
font_01_sfnt_off000083ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83ED 9908 bytes
SHA-256: 168e97213d963a66ee4d20f005ff825f81b6fb412cb826e51fb64edc3430e12e
font_02_sfnt_off0000a615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA615 16500 bytes
SHA-256: 5447fc6185d3016a3a7fe035711c5a28a34801b448f354b7b1c00c570485b9ff