Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fec17fe10aa6c20…

MALICIOUS

PDF

54.1 KB Created: 2020-08-10 10:37:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8488c8de29a00544ce9faa36b9a090b SHA-1: 5437ea5cd7679059aa36a56e5b0d5ca374b0f50b SHA-256: 7fec17fe10aa6c2093b5225b1f602a6d9d1b56b29f88c2cf6411876ae1c23a18
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating an attempt to drive traffic to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the redirector link suggest a phishing or malware distribution scheme, likely initiated via spearphishing.

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.cc/pify?keyword=j%25C4%2599zyk+angielski+s%25C5%2582ownictwo+tematyczne+pdf In PDF document text
    • http://files.jennifergelber.com/uploads/1/3/1/8/131871648/596328a1.pdfIn PDF document text
    • http://files.bigdogrottweilers.com/uploads/1/3/1/4/131406785/kidigiva_wenoso_sudaju.pdfIn PDF document text
    • http://sukitup.bespokecarpentry.org/uploads/1/3/1/6/131606490/7827143.pdfIn PDF document text
    • http://files.dragonmoononline.com.au/uploads/1/3/0/7/130738740/91335fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5154/7800/files/zepoziginagotasuzese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/atomic_mass_of_first_30_elements_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3874/4469/files/amharic_english_alphabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0493/5835/files/fuxazunugogoxuwesosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/memotod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/92126969254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/tesize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/wegowaxemetotonomaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5441/4494/files/12027065839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/neposumizome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/88690661277.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 5700 bytes
SHA-256: f00dbaaf746db52f7e5ef5a56dc92f202e259a89b76a1b0e313129e62ec3a655
font_01_sfnt_off000095f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F3 11688 bytes
SHA-256: 93d352be40e51f4c8bc3b13de9c0bbb16afe32113b511ece9294de5c7135b4c5
font_02_sfnt_off0000bac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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