Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a44efabbe11840…

MALICIOUS

PDF

55.8 KB Created: 2020-08-17 02:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f1c505ff3eab4fdccedd37160bc8f41 SHA-1: b7ab57e190a62e18de431a6b3aa77e6c454cba1e SHA-256: 70a44efabbe1184095d11e83966b2a8feeed54e4f4f72faea684e9d8a9928718
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL designed to trick users into downloading potentially malicious content. The embedded URLs, particularly the one pointing to 'ttraff.ru', are flagged as malicious redirectors. The document body, though heavily obfuscated, contains the primary malicious URL and appears to be a lure for information related to Android versions.

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=android+version+huawei+mate+9 In PDF document text
    • http://walopame.southernstyledevents.com/uploads/1/3/2/7/132740405/d1a050f7f3b4.pdfIn PDF document text
    • http://files.badgirls.hu/uploads/1/3/1/4/131482954/jased.pdfIn PDF document text
    • http://files.ruthcadioli.com/uploads/1/3/0/7/130776674/821578.pdfIn PDF document text
    • http://files.27andoak.com/uploads/1/3/1/1/131163914/7027796.pdfIn PDF document text
    • http://files.kirstenbuttononline.com/uploads/1/3/1/0/131070178/ligagivebo.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/1/0428/9835/8432/files/26965864763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/57359361735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/sour_grapes_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/60213242208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/vepoduvujofag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8697/0021/files/zifovujumoseki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/low_back_pain_home_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/gigewifibulepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2519/5427/files/calvinismo_e_arminianismo_livro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 9572 bytes
SHA-256: d4d9f0be1b1fae846476ffaf3b38cc87650e3847171b3c3df75d80685eb137c3
font_01_sfnt_off00009cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEF 5328 bytes
SHA-256: 546449e8f8a1d22bd313eb4cd39ccfa81b17182f4e98a0df114f55efb01d2138
font_02_sfnt_off0000aef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF3 10220 bytes
SHA-256: 3274f8d0679abb6b86fc63a1cc9ee139040d64b5d1b188e3a5f160972d64dc65

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