Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4f798fde958cd3…

MALICIOUS

PDF

32.5 KB Created: 2020-08-13 02:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f00284b4722db30169666f7e1532052 SHA-1: afdfbbd86edcf1db5ca30b0fc92179f898df1f7d SHA-256: 9e4f798fde958cd3d2a3dd325c2f7db6ddc8055f450c18939f6fcada2d7761a5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used to redirect users to malicious sites. One critical heuristic firing specifically flagged a link to a known malicious redirector. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.cc/pify?keyword=adara+keti+katha+pdf In PDF document text
    • http://files.thepowerhouseuk.com/uploads/1/3/2/6/132695862/5660009.pdfIn PDF document text
    • http://files.saharjoakim.net/uploads/1/3/1/3/131383541/tususodibidaredadaz.pdfIn PDF document text
    • http://files.theassertorsc.com/uploads/1/3/1/3/131379382/kelozidewumedifif.pdfIn PDF document text
    • http://files.foldedcraneyoga.com/uploads/1/3/0/7/130775309/ginibetikanisa_bakuk_fabakizagem_sizezekaju.pdfIn PDF document text
    • http://kusosibax.somethingblueplannings.com/uploads/1/3/1/4/131407668/zadibudopavejel.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/1/0432/6798/1476/files/28227891880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/sidefojevaxexofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/nurogomoroguwige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3834/files/longman_academic_writing_series_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/peraxewikiwijilujejuboxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/survey_of_mathematics_with_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/sports_psychology_articles_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/dolefovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2342/5955/files/29942618692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/bhagavad_gita_book_telugu_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/brassage_gntique_au_cours_de_la_reproduction_sexue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/fudiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1086/6851/files/temufufekixur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/84998071.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_off000045c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C8 4972 bytes
SHA-256: b4403ab67fc32da924b59e605e709ad42316f2922a90b6dfa74032fd6ccdc5f1
font_01_sfnt_off000056ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AB 8868 bytes
SHA-256: 6340239a15bb4bb081c100d978ec10258202b980818207ac1b38dce94e51df0f