Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f815675ee510ca1…

MALICIOUS

PDF

47.8 KB Created: 2020-08-05 13:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d456b2e908f98ffae0cb6b765c5b81b SHA-1: 2002a4ed390c8adfed4cbd1fca7926d5d07466a4 SHA-256: 1f815675ee510ca1fb22d90991b2b177015722322429ba81d9458fadd20174f8
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a PDF link farm pattern, with numerous external links, many hosted on Shopify. The document body contains a deceptive lure related to 'Java complete tutorial pdf download' and includes the malicious redirector URL. The primary attack pattern involves directing users to malicious sites through a deceptive link farm.

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.com/pify?keyword=java+complete+tutorial+pdf+download In PDF document text
    • http://files.sullenwhimsy.com/uploads/1/3/1/6/131637308/8863c7af091.pdfIn PDF document text
    • http://files.drbrandthawaii.com/uploads/1/3/1/6/131606146/xufabaxobakoti-getazoj-panugaki-pifefar.pdfIn PDF document text
    • http://files.ajcookfans.com/uploads/1/3/2/6/132681901/5695974.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/1/0432/0329/7438/files/boomer_battlestar_galactica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9273/8201/files/lafofokuzuzenexal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/5916536611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/98090453056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1510/9799/files/foredodezipupesemepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/96812545854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/widavitixaxotoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/4237150392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/xuzutesuxasotig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/5034211243.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_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 5264 bytes
SHA-256: d45146e79079939261019fe40f09744308c38b710399f2b445f952d1ae210723
font_01_sfnt_off00008e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E49 10640 bytes
SHA-256: 921fd520ce3b2a222b797b0db1ee5e5f48ee1788497aaa150e4f6b6e0e3d201f

Open this report in the interactive analyzer, or submit your own file for analysis.