Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d8ab686c9071e8…

MALICIOUS

PDF

46.6 KB Created: 2020-07-31 03:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a452007b5a23a91b46ad31f8c44dc62 SHA-1: 668b3023e763804df52388ef3a27008567bca0bd SHA-256: e7d8ab686c9071e8b2991d337fda21d712917a7aacd661a37a956b587366b811
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create SEO link farms or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=census+1951+pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body text is heavily obfuscated and does not provide clear intent beyond the presence of links.

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=census+1951+pdf In PDF document text
    • http://files.kristenlaudance.com/uploads/1/3/1/4/131453015/26bcf.pdfIn PDF document text
    • http://files.snifflesclownsupplies.com/uploads/1/3/2/8/132815854/resoledepumidik.pdfIn PDF document text
    • http://files.mcgrewwoodwork.com/uploads/1/3/0/9/130969772/guvuvapo_xeraxufe_rulirusib.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/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/gojevugajozunakokutoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/tekiwafubut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/97463347969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/72031987610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0116/6498/files/96025409172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/gukafawunuwixizofam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/tedafu.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 7

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_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 4696 bytes
SHA-256: f95e18b40ba290f692713d148a329176efead85743fffb2c91a480d3c21f2301
font_01_sfnt_off00007bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC3 15596 bytes
SHA-256: 86d7e103c23dbedd37b1de4817eb0d40b1c71fb28eac7e67c83493709d08839c

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