Malicious PDF — malware analysis report

Static analysis result for SHA-256 799a30f069ba60de…

MALICIOUS

PDF

52.2 KB Created: 2020-08-13 21:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd622864dee7fa35db7313e852126a7d SHA-1: 738d452e6190d52133afeca2c7b14fca91ced767 SHA-256: 799a30f069ba60de40cf9ff926e438b2ded19166893362490aaf4357aab3541d
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which leads to a link farm of 16 other PDFs. The primary redirector URL is identified as malicious infrastructure. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users into clicking it. No scripts were extracted, but the PDF structure and heuristics indicate a phishing or scam attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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+studio+tutorial+for+beginners+in+tamil In PDF document text
    • http://files.iillestfinds.com/uploads/1/3/2/6/132695219/lozala.pdfIn PDF document text
    • http://files.emmabankshomeopath.com/uploads/1/3/1/8/131856046/xorab.pdfIn PDF document text
    • http://files.diamond-equine.com/uploads/1/3/0/7/130739718/xovipeluled_xanugolu.pdfIn PDF document text
    • http://files.kaurpsychiatric.com/uploads/1/3/1/0/131070469/6401494.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/1/0437/1415/0553/files/bibla_ne_shqip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2749/5072/files/allahabad_university_holiday_list_2020_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6831/0172/files/gomizazikisiduzimogave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/xofezosalagemikuvix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viloronijiletamuzolodoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/6345632940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/94794956895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5321/7952/files/daily_phonics_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/jasiledirudefelenuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/11544243649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/wow_tailoring_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/74734125948.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 5356 bytes
SHA-256: 7b9b95f7f349d3406b57f7944304613bb9f5d2bf77ee998e5f5d429d94a14d1b
font_01_sfnt_off00009c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C81 10780 bytes
SHA-256: 32134308675f4db9ca9cfbe61ae55b471ba14045f22ab9c62848ed9e78791dfb