Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ddb9151afb1f02…

MALICIOUS

PDF

43.9 KB Created: 2020-08-19 18:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb234b00902d814d0c83ef546704402b SHA-1: 2a3184123513db4ca792dee844d5e94af4094acd SHA-256: f6ddb9151afb1f029f8894dae26afbf9d03952b2743baba6b61662403ccc4a26
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as educational content. The link `https://ttraff.cc/pify?keyword=spanish+grammar+exercises+worksheets` is designed to lure users into clicking it, likely leading to a further malicious download or phishing page. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the final malicious destination.

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=spanish+grammar+exercises+worksheets In PDF document text
    • http://files.valskountrycorral.com/uploads/1/3/0/8/130813531/soxubevosajapax-dupuna-vofoxepokibobi-nokedoled.pdfIn PDF document text
    • http://danukor.gaelicsocietytoronto.com/uploads/1/3/0/9/130969808/koxebu.pdfIn PDF document text
    • http://files.manxfestivalchorus.com/uploads/1/3/1/4/131438177/6181704.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/1/0432/7633/7318/files/tafanataxivuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/97823273154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1948/2774/files/7956009091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7963/files/android_1_all_mod_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6582/files/gisoxijizozenuzojipaxileg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5063/5162/files/physical_science_grade_11_caps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/jovupesaroxumaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/phn_mm_chuyn_dng_nh_sang_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6778/files/the_biographical_dictionary_of_film.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/what_is_inflation_and_deflation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xivijabimejurenu.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_off00006c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2D 5640 bytes
SHA-256: e4aebe06933912eb036be6e00a1b39bb5d4508ed1bd64e28c1137a4daaec3acb
font_01_sfnt_off00007f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3F 10176 bytes
SHA-256: 9301a4bffd187d0df3304bc28be30478202558c58cb5c66ebacc639a86b101e8

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