Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c773b3011a4daf3…

MALICIOUS

PDF

42.4 KB Created: 2020-08-13 22:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 683c1600e11dc29e20c4d5ae6d0ca870 SHA-1: 71b3b75116987e903bcb706ada807cd6159a15a4 SHA-256: 7c773b3011a4daf361854b8fb94d1bfb07716d44148b9fcb02853b0314a38eed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.ru/pify?keyword=apptoko+ios+11', is flagged as malicious. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious sites, likely for malware distribution or credential harvesting.

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=apptoko+ios+11 In PDF document text
    • http://files.firstbaptistwheatfield.com/uploads/1/3/1/6/131606065/lufukubilixi.pdfIn PDF document text
    • http://rimawujo.in2yogalapeer.com/uploads/1/3/1/3/131380005/bdde5.pdfIn PDF document text
    • http://files.communitybetterment.org/uploads/1/3/1/4/131438629/6050175.pdfIn PDF document text
    • http://files.aidasalazar.com/uploads/1/3/0/7/130739651/9411306.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/1/0434/5869/1232/files/badolas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/nafebogewos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/60438516914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxepetumikikexozifaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/zakinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/encyclopedie_francaise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4478/8634/files/52250439843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/7093488428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/american_red_cross_bls_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/bodyboss_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/39677204310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/46938731195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/fonatonexax.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 4

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_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 4580 bytes
SHA-256: d06691b12e988f98ab8780e4822d5835d6800f52e8585497ecd78ec1b50a97aa
font_01_sfnt_off00007605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 10876 bytes
SHA-256: b398ee4363012211044f6f90144ab5c040c5bb22278c6aa9652e372039194ab0

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