Malicious PDF — malware analysis report

Static analysis result for SHA-256 d335a7987200bf3e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 16:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2a7fa4d2e4e1e98663a0a245b6334d8 SHA-1: 6f1a3698d82d9967583306166f2e868ebeb404fd SHA-256: d335a7987200bf3e32974d7222f1462b70237ad84e0cb3039cffa8a7590f94af
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple embedded links designed to redirect users to a malicious site, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary redirector URL is 'https://ttraff.com/pify?keyword=mastoidite+tratamento+pediatria+pdf'. The document body, though heavily obfuscated, contains references to this redirector, suggesting an attempt to lure users into clicking through to a potentially harmful destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=mastoidite+tratamento+pediatria+pdf In PDF document text
    • http://files.elitesneakz.com/uploads/1/3/1/3/131380612/kigix.pdfIn PDF document text
    • http://files.kmbestpractices.com/uploads/1/3/1/4/131437657/9ae2b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/irs_pub_523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/zozejawefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/mixipiworavebez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5426/0643/files/vonozusapupikisige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2427/5863/files/42274277740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0237/8915/files/rixokiduri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/13211406023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/16536455349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9583/4276/files/im_a_celebrity_game_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3893/9048/files/bedtime_stories_to_read.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 4948 bytes
SHA-256: 9be6f579f55c19f6e42f32423e9531d994d22fe726b2bbde72fb7fe851e5f605
font_01_sfnt_off00006a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A97 10088 bytes
SHA-256: 9eb1e9e3cb2aead84e99178f70ade069d0f27256583a4106d2060cf859c31ee4
font_02_sfnt_off00008d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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