Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4e8b3f6ef9ca1d…

MALICIOUS

PDF

38.5 KB Created: 2020-08-21 06:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7ca37cd82ecfee6187d3b99203cbfb3 SHA-1: d6316ff035d5ecfcb8f1476eb3508ee7eb52e614 SHA-256: ea4e8b3f6ef9ca1dab67b59e04029c6def1e55a7ab39a0df40c45a2d9bbd03dd
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the target URL, reinforcing the lure. No scripts were extracted from this sample.

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.ru/pify?keyword=ard+mediathek++chrome In PDF document text
    • http://vaguto.chefmikescharcoalgrill.com/uploads/1/3/1/4/131406082/wukabuvot-turogaro-posukom.pdfIn PDF document text
    • http://files.barbarasuebrodie.com/uploads/1/3/2/8/132814073/1635928.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/1/0432/9232/8102/files/english_vocabulary_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0116/5462/files/zixituxojosizokan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/fegobab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4860/3546/files/84187437282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/printable_bingo_cards_1-_75.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/scorecloud_studio_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/dodejuvedogupix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8189/1989/files/95583402356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/renewing_drivers_license_alabama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/23272825158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5778/2694/files/blur_background_pic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/funciones_de_los_canales_de_distribucion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/thinking_in_java_download_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/internet_speed_meter_lite_premium_apk.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 3

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_off000058e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E3 5020 bytes
SHA-256: c45540b04c0066084afa6519b03df7ff2453f9529640a9e45078cb7d15a53385
font_01_sfnt_off000069bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 10360 bytes
SHA-256: 52f28d2f7d16800ea7163808dc4bbb9d541b555ff80d2aa58e9421619899ef97

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