Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf953b8060fd666a…

MALICIOUS

PDF

46.3 KB Created: 2020-08-15 00:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d96b4a06c18aef11651b1a9183f4a11 SHA-1: da3957094521e9af8decab07eae6c00a2d7ebe86 SHA-256: cf953b8060fd666ad8f0e089dea836950bb774dbc82a6281e96a83ccff09eda3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, suggesting a link farm or SEO poisoning attack. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. While no scripts were extracted, the sheer volume of links and the malicious redirector indicate a high likelihood of malicious intent, possibly to lure users to phishing or malware download sites.

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.ru/pify?keyword=bollyshare+new+movies+2018+bollywood In PDF document text
    • http://boriru.holytrinitydaphne.org/uploads/1/3/1/0/131070487/3543516.pdfIn PDF document text
    • http://detumikij.nmillerillustration.com/uploads/1/3/0/8/130873876/torotal-jamopek.pdfIn PDF document text
    • http://dilititom.pestcontrolfortworth.net/uploads/1/3/2/7/132740324/870a073.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/1/0431/1141/5959/files/clip_studio_paint_pro_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/39176950694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/20075845088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/pdf_agama_islam_kelas_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/bootstrap_offset_right.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0696/8483/files/fajizopukaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/65402735370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fester_s_quest_nes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/42854975990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/movie_box_for_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2624/3996/files/11771333350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/suwuxerujofanixejagir.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
🗂 Part of campaign: charisacctservices.com 5 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 5236 bytes
SHA-256: 68dda69cf6f8bb173a0bb733263f4aaa7c37987f50d551a225ec470f793630e2
font_01_sfnt_off000073ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EF 6028 bytes
SHA-256: 2e7f2999d5fad1bfbccf560e96732301323656e334fec127284d435ff6c0132c
font_02_sfnt_off0000885b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885B 10392 bytes
SHA-256: 9935e9184820efbf6b688e52c3cbf519871bce5f21615b6bb92d56dbdc01e980