Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c0ae48b3468d19…

MALICIOUS

PDF

40.5 KB Created: 2020-08-23 15:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b55ac09b90c22580a5e7f02f3d36bb95 SHA-1: 711482619d1b5071dfeaf965e81a537a644f48f1 SHA-256: 73c0ae48b3468d19d97a6b8b9076adb9e1d483d5d708ec5cbb00173ba1782f87
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure for 'free powerpoint templates business intelligence'. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect 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/pify?keyword=free+powerpoint+templates+business+intelligence In PDF document text
    • http://dejavisi.dsppsu.com/uploads/1/3/2/7/132740285/7926241.pdfIn PDF document text
    • http://files.theredleafpractice.com/uploads/1/3/2/8/132815220/nonozunajabegubum.pdfIn PDF document text
    • http://files.rosecitytrinityumc.org/uploads/1/3/2/6/132681698/3930896.pdfIn PDF document text
    • http://files.quasilocum.com/uploads/1/3/1/3/131380733/dazepip-tefifipipewesex.pdfIn PDF document text
    • http://mafijebov.florencetrackclub.com/uploads/1/3/1/8/131856890/zetewegezudik-nerud-zewijonivutuziv-pifudirezun.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/1/0431/6574/5309/files/10257090144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/video_call_recorder_app_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7560/8214/files/6540640341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/apple_social_responsibility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/email_domains_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/feporotojala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/air_suspension_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/adhyatma_yoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/suveguvunurezepuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/22100814505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/cracker_barrel_buttermilk_pie_nutritional_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/isc_class_11_biology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/firewall_ios_for_gns3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/silov.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_off0000614f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 5440 bytes
SHA-256: 1f99b91c6614f33ace5c89e401588c9ce983f8451d69eb46fd991852b2624433
font_01_sfnt_off000073c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C5 9652 bytes
SHA-256: 5dafd4bf6fdfb7015f255bd101161e68f01f24df5136584e83d673a11a7c4cd8