Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5defbabd70116a8…

MALICIOUS

PDF

45.8 KB Created: 2020-08-23 23:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62d41bbcfa2a527ff7c31800c29a4ec0 SHA-1: 9ecc7b43d7beb98de9039d9eaf44f3c43e155aa2 SHA-256: e5defbabd70116a840086fc0e47f368fdbcc475d6a7183c0f486c0186b9a45de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=ultrasound+guided+carpal+tunnel+release+recovery+time'. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=ultrasound+guided+carpal+tunnel+release+recovery+time In PDF document text
    • http://files.norikiyohonda.com/uploads/1/3/1/4/131407299/lezokezuduvujisoxap.pdfIn PDF document text
    • http://files.stephanieryckman.com/uploads/1/3/0/9/130969053/pawor.pdfIn PDF document text
    • http://dagov.greenteamforfifeanddrum.com/uploads/1/3/1/4/131437604/5373d.pdfIn PDF document text
    • http://defoju.lizbethgiftsnthings.com/uploads/1/3/0/7/130776031/levomeden.pdfIn PDF document text
    • http://files.zorniklab.org/uploads/1/3/1/3/131383480/lefoka-zugowewa-faladijabibovin-noxapajuv.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/1/0437/0097/7816/files/sap_abap_basics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/jexugadipuliguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5407/9904/files/atos_2018_integrated_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/17028204967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/94527064847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/51241241895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/understanding_management_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/jomewebirazebutesevukube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/98261140795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0100/1630/files/lojepuxosapexipiwuxelor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/vewel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/70770968425.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7449 5544 bytes
SHA-256: 61de28c313693e31b081cd5719fb80651d10b5a5df53c6c5a09f1209657076e6
font_01_sfnt_off00008711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8711 10140 bytes
SHA-256: 90562d4f821de9fdb2c9836eef2dbf04fd34ffde834a26983f5b3d388460801f