Malicious PDF — malware analysis report

Static analysis result for SHA-256 112c1f89490c7928…

MALICIOUS

PDF

58.3 KB Created: 2020-08-15 12:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 012e2e83a232ba50c9dc9e08d9d3be40 SHA-1: 2456a9ecf6e6541e8e5aecd1e6531c03b95532ce SHA-256: 112c1f89490c7928abdc30096c39ea8ef3c532e9b77dac04e327e5f3d93b3981
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is designed to trick users into clicking malicious links, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/wb?keyword=velaric%20airstream%20mechanism%20pdf In PDF document text
    • http://files.corinnecook.me/uploads/1/3/1/1/131163953/fifovezobobudu.pdfIn PDF document text
    • http://files.ezellaviation.com/uploads/1/3/1/4/131406149/14997da3.pdfIn PDF document text
    • http://files.auroraarearetiredteachersassociation.org/uploads/1/3/0/8/130874514/8e0f76fbfb90320.pdfIn PDF document text
    • http://files.mrwilliams1776.org/uploads/1/3/0/8/130874281/xikodixolo_kuguxig_moxerenazo.pdfIn PDF document text
    • http://files.oursaviorsdevilslake.org/uploads/1/3/1/4/131452799/fe032d5c.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/1/0437/8309/4434/files/xadoloxiderivugidiwide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/98693892540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/godizabalunuxakukoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/adverbs_worksheet_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/43974013661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/betuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/93134823225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9072/3487/files/sekafujujigibekugaxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/rogakaxejotef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3586/4736/files/adobe_2019_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/maxonolugunepurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/1611271051.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_off0000894e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894E 5360 bytes
SHA-256: 1e55a541fd62a4182b1c67682bd1befccd7c4c34eb12e492967f3847e05998b7
font_01_sfnt_off00009b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5E 12872 bytes
SHA-256: 623d34f4356d913607502991544212ff50c03a50823d271aabdaac9bc223f6db
font_02_sfnt_off0000c687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC687 16180 bytes
SHA-256: e462b1d3447dd7824e86a6c4ec2bf3c4148dbe95206cb0714d177a4459007af8