Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda44f99878e271f…

MALICIOUS

PDF

44.4 KB Created: 2020-08-20 00:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57778d1248b1aaba225202f71759d0ab SHA-1: 2d3e39ffc1b486fa7682840093b8cd23987f1bce SHA-256: dda44f99878e271f910f9ad282475ceaecaca5b42a77d488fe32e807c53f2474
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, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=landscape+portrait+android. While many other links point to Shopify, the presence of the redirector suggests an attempt to obscure the ultimate malicious destination, likely for phishing or malware distribution.

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=landscape+portrait+android In PDF document text
    • http://kuwulexo.timgriffiths3d.com/uploads/1/3/0/8/130814328/1782794.pdfIn PDF document text
    • http://files.stamfordpresbyterian.com/uploads/1/3/1/4/131438056/3653781.pdfIn PDF document text
    • http://mofosopov.europeanburmesebc.org/uploads/1/3/1/3/131383900/3131066.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/1/0435/2344/0804/files/36350805747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/35686507139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/lunchroom_fight_suspension_report_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/71744938884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/melavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/algebra_1_benchmark_test_4_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/matthew_ashimolowo_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/fukoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6505/9997/files/classification_of_agronomic_crops.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9633/2705/files/livro_abandono_afetivo_indenizao_por_dano_moral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/24647349506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/journey_don_t_stop_believin_sheet_music.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 2

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_off00006f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F50 4976 bytes
SHA-256: e29bef795fdb2aa0d1e096e3979748a278ee6d23081b281bdbec5ffabb856b25
font_01_sfnt_off00008048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8048 10668 bytes
SHA-256: d349948060cb77a2b7a0444bfec065232def56165f4e0e53dc7c64bd82225f14

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