Malicious PDF — malware analysis report

Static analysis result for SHA-256 155ddd0e134cc42a…

MALICIOUS

PDF

70.0 KB Created: 2020-11-17 15:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1bd94f7a2259ef449a47a23b6bac2c8 SHA-1: 15b80764e3a868e7f6edfbb24802477a7b0d8311 SHA-256: 155ddd0e134cc42a20066f6db723c2bd0c3200d22604d4dbe306e3f9774305a3
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing operation. The primary lure, 'Enhanced lccap guidebook 3', redirects through 'trafftec.ru' to a potentially malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=enhanced+lccap+guidebook+3 PDF link annotation
    • https://fozumazajafipal.weebly.com/uploads/1/3/4/5/134588547/kozupizokipiji.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/rutam.pdfIn PDF document text
    • https://mamotuzukaw.weebly.com/uploads/1/3/4/4/134438076/7846475.pdfIn PDF document text
    • https://wesujugureju.weebly.com/uploads/1/3/0/8/130874517/zonekagififeb_denules.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f9548648ae32.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/glycosylated_haemoglobin_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/takegupa.pdfIn PDF document text
    • https://lafumunokude.weebly.com/uploads/1/3/4/6/134666321/27fef2ab98c02.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/93719508714.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/daremevibiwuga.pdfIn PDF document text
    • https://taxepenobeg.weebly.com/uploads/1/3/4/3/134355702/faxepinenu_labato_xomomex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_5fa703608e247.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f72d647e-3fad-4245-a09c-383a22b90aa1/gelixarovexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e735ca30-ec47-40ea-bc3d-bbc4d4298de5/54154050317.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_off0000d258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD258 5388 bytes
SHA-256: 94da2a1d0243e12b458ae932b209c9495cbdb7b6475e26dfc8af68e12dc7a64a
font_01_sfnt_off0000e4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A8 11936 bytes
SHA-256: 8c76cd2738185e3eedb04eb61d476bfbd0012ca746e1000288fcf5345197be1a