Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbf38df0f1d2f1f…

MALICIOUS

PDF

59.4 KB Created: 2020-07-30 11:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3ad7c5fb40b9372afca8ff4e235ba7e SHA-1: a106d8a4a826d044ac058614431ee51847c9c5ff SHA-256: 4bbf38df0f1d2f1f39663bb53fc814a1c51a703b2c1e5e264ad4fc42075ae088
202 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to 'budgetary and non budgetary control techniques in management pdf'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy to potentially improve search engine ranking or distribute malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=budgetary+and+non+budgetary+control+techniques+in+management+pdf In PDF document text
    • http://files.stmark-lutheran.org/uploads/1/3/0/8/130814926/wubotemovenibeb-vudefejusefajav-vipupijawu.pdfIn PDF document text
    • http://files.seeyarealsoontravel.com/uploads/1/3/2/6/132696018/savajafukudumurije.pdfIn PDF document text
    • http://files.soundofsilver.net/uploads/1/3/0/7/130739379/nudabuluzu.pdfIn PDF document text
    • http://files.alohadrycleaning.com/uploads/1/3/1/4/131454699/mavudomupo-firif-povazozadipu.pdfIn PDF document text
    • http://files.buffalorutlandcompany.com/uploads/1/3/1/6/131606146/8085128.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/1/0431/2009/9488/files/lubenipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3362/3708/files/91275252574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4602/files/jomudusonol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2908/6887/files/18760651016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/napidago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8460/files/89622339675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/16353478795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/97916106508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/tumaropasumoralexinak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/pufopuxigafatoditemijeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/neruli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/venimakibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/zorulava.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_off0000a71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA71D 5868 bytes
SHA-256: e6d162adde35924db28b3148d753cec475b608fd923253856ab6929d25f04998
font_01_sfnt_off0000bae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE2 11080 bytes
SHA-256: a14e97d6265e5f4efeb5c2999ade3d28c63eed0d95ed0f6e67225015ef13cb3c