Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7aa172d68f042d…

MALICIOUS

PDF

51.5 KB Created: 2020-08-26 15:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf1ad8ba0d4a39568de4d33513d9e6d2 SHA-1: 2432f7ce359924e39cdd0fb7948b649925b80b4c SHA-256: da7aa172d68f042ddb9bf9cf85c9ec268adc8254ac7e2346a16893a393cfe70c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains text suggesting a lure for 'free cartoon animation films'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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.link/pify?keyword=cartoon+animation+films+free In PDF document text
    • http://xirim.w-here2stay.org/uploads/1/3/2/6/132682347/4794229.pdfIn PDF document text
    • http://sadijet.longxarts.com/uploads/1/3/1/4/131454415/wejimidodevuj.pdfIn PDF document text
    • http://files.spamitzvah.com/uploads/1/3/1/3/131384789/2268709.pdfIn PDF document text
    • http://files.thebusinesscreditmovement.info/uploads/1/3/0/9/130969026/basoxadu-surekamu-kuborabejijuvow-fajasakan.pdfIn PDF document text
    • http://files.executived-daytours.com/uploads/1/3/0/9/130968988/2051568.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/1/0428/5743/1196/files/46844516909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9512/0289/files/sofagutumedajenumil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9055/0679/files/los_hermanos_corsos_alexandre_dumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/waxamilagozovimixulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/13560769441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5913/3081/files/nofekewuzivonelopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/34928381045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/kekiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/18656942374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/deck_of_cards_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/7987/3191/files/demographic_transition_model_stages_1_4.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_off00008e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E35 4816 bytes
SHA-256: 1326fd89cc2369806995c3d5b063ae4ab14d3f3544d5816a7c4f795722726913
font_01_sfnt_off00009e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E77 10060 bytes
SHA-256: 964dc82c6af425e6bc8d7a7af612bd86dae81097b981dfa752238f5d5977efab

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