Malicious PDF — malware analysis report

Static analysis result for SHA-256 436d8dcf49a06529…

MALICIOUS

PDF

33.3 KB Created: 2020-08-06 03:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5385ccbc96da6cca6bd757011560d23c SHA-1: 2fdfce33895ab3e67803edbd24cedc4d74a127d1 SHA-256: 436d8dcf49a065291a630210d612520d6f49b78ed075ab1b44b7ab4be306393b
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=8th+grade+math+transformations+test+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to various Shopify-hosted PDFs, some of which are marked as confirmed benign, while others remain unknown. The document body is heavily obfuscated, but the presence of the malicious redirector URL and the link farm structure strongly suggest a phishing or redirection attempt.

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.cc/pify?keyword=8th+grade+math+transformations+test+pdf.
  • 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=8th+grade+math+transformations+test+pdf In PDF document text
    • http://mumemazan.brosforstevenash.com/uploads/1/3/1/4/131453109/zebikugigowa-vitabuwopurima.pdfIn PDF document text
    • http://files.elorafaye.com/uploads/1/3/1/6/131637016/zirum-zidugo-tewipirixelir-wipogomibuzeviw.pdfIn PDF document text
    • http://files.rosedalecurriculum.com/uploads/1/3/1/1/131164460/farosi.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/1/0434/2729/9478/files/dujenamamibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/dugosabasuxuberuliki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/65550411291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/63649714275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/xampp_default_mysql_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/atresia_esofagica_tipo_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/30395686678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/walmart_apply_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/25810488249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/gosexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/84899825875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/tedalanavodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/zanapupapozilumozofow.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_off000046ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46AB 5520 bytes
SHA-256: 6da14b89fe4c0184284a50eccb26e62a3c6ea9371a99ba9b820e9f234c963eb9
font_01_sfnt_off00005943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5943 9008 bytes
SHA-256: 20db73468da6cff3b3d3345d38e6a5734199a9b897ad8f2ec863b967f3dde530