Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac5511702b284b58…

MALICIOUS

PDF

38.6 KB Created: 2020-08-22 08:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65fdcadd53043885e3b1172631123b2c SHA-1: fbe6e10ff677e7901c377bb446a48bed826c9d8f SHA-256: ac5511702b284b582425940e613a45958af24fae730c1439b93a955b83641449
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=jacksonville+jaguars+injury+report+week+6'. This indicates an attempt to redirect the user to a malicious site. Additionally, the PDF was flagged for containing a link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The document body, though heavily obfuscated, contains the same URL and a reference to a PDF file hosted on cdn.shopify.com, which is likely part of the 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.ru/pify?keyword=jacksonville+jaguars+injury+report+week+6 In PDF document text
    • http://files.flipconsultants.com/uploads/1/3/0/7/130740586/6921591.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/1/0435/2425/9992/files/kozabij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/serratus_anterior_stretch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/19707709316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/homer_simpson_meme_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9466/1538/files/aulularia_plauto_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0858/7936/files/anonymity_and_confidentiality_in_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/realidades_2_capitulo_2a_page_35_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/pozimorudenopuxivajofal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/salukizujudizizulexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/lowes_springfield_il.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/noguravixozoxukexubepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/fraction_word_problems_grade_7_worksheets.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_off000057ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57AC 5636 bytes
SHA-256: dce522d6f8a989322bab5b0ae123f6ff0ad9d0665e184adeacdefa5e19727e0d
font_01_sfnt_off00006b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B12 10040 bytes
SHA-256: f49af89a23f8d4c2e992af74a7660e18280179c06d4f58c574b8f4552528a97d

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