Malicious PDF — malware analysis report

Static analysis result for SHA-256 915d7f9fdd5138e9…

MALICIOUS

PDF

62.4 KB Created: 2020-08-08 14:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56e16e3e31e097cf1bd1b39d6548c658 SHA-1: dbc609d694b810a9a6cbacc8a8877f95d27672e5 SHA-256: 915d7f9fdd5138e94a53162b7aa8754982e2c5052b3bcfca98d0137f11a2538e
202 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, likely intended to lure users with fake invoice or payment content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=balance+of+payment+of+pakistan+pdf, which is linked to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to payment and PDF, reinforcing the lure. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=balance+of+payment+of+pakistan+pdf In PDF document text
    • http://files.grizzlyridgeupcycle.com/uploads/1/3/1/1/131164310/rexube-kowez-xukaxeguti-momoben.pdfIn PDF document text
    • http://lidev.jenreidphotoart.com/uploads/1/3/0/7/130738799/c2db5e7d2aac.pdfIn PDF document text
    • http://joburaxor.i95tradecenter.com/uploads/1/3/1/1/131163599/80fdeb.pdfIn PDF document text
    • http://files.oshkoshcarpetcleaning.com/uploads/1/3/1/0/131070527/didovatifozuba.pdfIn PDF document text
    • http://files.cidangelcarpetcleaning.com/uploads/1/3/2/7/132740399/filidavosatujok.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/1/0433/5625/8454/files/foxit_mobile_reader_for_android_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/74156118810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9147/7148/files/dituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/kawizekegijeresojuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/rovitixoduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/jakuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/fofufasulafojosidubinake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/babajesirujexoviburirofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/amazon_web_services_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejut.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_off0000a86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA86C 5208 bytes
SHA-256: 5e59a854cc60730c2d1ba15e082cabf44f2889de30e156cf5c4875feb6e00912
font_01_sfnt_off0000ba13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA13 10604 bytes
SHA-256: 7b67418793bc48209a72eed934f415f818e483adb1dceb5ea3e1983a7cb1a34e
font_02_sfnt_off0000de4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34