Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e8fda3b2ceb8bc…

MALICIOUS

PDF

41.5 KB Created: 2020-08-23 20:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b2dc28c3be6fd398bfc2367dafdaa4b SHA-1: e07a5f420c90fec8ddd3a31daa6e7073c1a4fe6b SHA-256: e8e8fda3b2ceb8bc7501c72da3b17393866a22680e09f364e7920a1a616d60e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a touch screen calibration tool. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are to benign Shopify URLs, likely to improve search engine ranking for the malicious link. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF.

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.
  • 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.
  • 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=touch+screen+calibration+windows+7 In PDF document text
    • http://files.heavygrail.net/uploads/1/3/1/3/131380733/bitat.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/1/0433/8188/3047/files/asme_pipe_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/mamigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/gevivenuxinexexage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/icy_veins_unholy_dk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/danon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/70050348530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/ritefojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/35519819390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/albugo_fungi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/android_studio_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/91994979428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/dokitaleseluvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/oriflame_catalogue_april_2020_download.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 8

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_off00006571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 5288 bytes
SHA-256: 3afd0c881f42b15c27148eafb1879d21a71fabfd442238152c685901230c1d73
font_01_sfnt_off00007779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7779 9868 bytes
SHA-256: ce1c6b177761df8fd264440ed72ba904240e11d5298194f14c73a921b31309e1

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