Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a27c27b69e8370…

MALICIOUS

PDF

44.2 KB Created: 2020-08-03 04:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e991b8a56543327a04a05ed099e5b334 SHA-1: a9adf144cd9e9d16b80c260042ff9cca89061835 SHA-256: 16a27c27b69e83703e1a2a5e198fa2feb29ae64db3d0056085e273f8c67dea9f
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is part of a link farm designed to phish users with fake download lures. The embedded content and heuristics indicate the primary goal is to drive traffic to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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=briggs+and+stratton+engine+repair+manual In PDF document text
    • http://gewikob.chriscraneportfolio.com/uploads/1/3/0/7/130776031/tisaxomo-jexapepafob-jatatufosil-xepasedijof.pdfIn PDF document text
    • http://files.eatwellwithwilson.com/uploads/1/3/1/4/131483371/5683681.pdfIn PDF document text
    • http://files.midwestnettingsolutions.com/uploads/1/3/1/0/131070398/jovibososazekajagata.pdfIn PDF document text
    • http://files.jimenavalenzuela.com/uploads/1/3/0/7/130776661/tasobenuzurid.pdfIn PDF document text
    • http://files.purepillowtalk.com/uploads/1/3/1/3/131381480/375822.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/1/0435/1839/4523/files/96455563442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/xakezufunufeluguborex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/wow_classic_heavy_leather_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/html_in_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78578063821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/82877073804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/steam_code_redeem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/47779007007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/vuwowosijadaximudageliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/youtube_link_full_screen_autoplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/dodonefawupimifelevat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/11214316138.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_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 5208 bytes
SHA-256: a4a05849e8f8371305415064d5b86986582d920686fd4bc46b11650c25d3ba7d
font_01_sfnt_off00007402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7402 9816 bytes
SHA-256: ddfcf574e34ed8920b104c40b31a53429148b12755c3cb2f9be510b8ed363ecd
font_02_sfnt_off00009598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176