Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f7cc96bb1feb8c…

MALICIOUS

PDF

46.2 KB Created: 2020-08-23 18:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15a921b7991b5d4106a6f3c19b51dc05 SHA-1: 8128c2c29666c40ed232670656108adb034e3ab1 SHA-256: 71f7cc96bb1feb8cb8b8d8251b33353a9d21ef3f52071ef7993213210e69c86a
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying a link to a known malicious redirector infrastructure (ttraff.com). The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect users to malicious content, likely for phishing or malware delivery.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=barnyard+pc++iso In PDF document text
    • http://gifulire.kofc420.org/uploads/1/3/0/7/130740510/9b12d89.pdfIn PDF document text
    • http://juwibo.redwingfirstcov.org/uploads/1/3/1/6/131636855/56fd6bd9a6b.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/1/0434/6649/0006/files/arduino_pro_mini_328_5v_16mhz_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9696/5269/files/75603232741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6156/5850/files/minukudidigesovotifafar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/57947615799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/65999027250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/rf_attenuator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/55935144126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/table_border_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/free_wifi_camera_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/57590373867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/jogewojifewixemine.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000778b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778B 5184 bytes
SHA-256: a3e09add6d56d2988ae0683442732846cc536444a1a6a7d2d3f9eed90c77f8de
font_01_sfnt_off0000893a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893A 10128 bytes
SHA-256: aae7234b421d4ceb3c77d649d8a643784e529abc6efb3fe1611477af481190b8

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