Malicious PDF — malware analysis report

Static analysis result for SHA-256 11fad0543fb72ac3…

MALICIOUS

PDF

41.7 KB Created: 2020-08-04 14:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e03e9bd449f2f67613a149af8fed233b SHA-1: 27ddbebc2d0205d5e2c1693916780fca09eb5517 SHA-256: 11fad0543fb72ac3c1856d89b596ada21079495ca0a866f469fdcdbcad5e3a31
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious SEO redirector, masquerading as a free download for 'marathi katha kadambari pdf download'. This is further supported by heuristics indicating the PDF links to known malicious infrastructure and employs an SEO link farm strategy. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing attempts.

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.com/pify?keyword=marathi+katha+kadambari+pdf+download In PDF document text
    • http://files.myvipleadz.com/uploads/1/3/1/1/131163836/9392695.pdfIn PDF document text
    • http://files.powerpointers.info/uploads/1/3/0/8/130814238/zafixenuxep.pdfIn PDF document text
    • http://files.xtremeflair.com/uploads/1/3/0/7/130775649/4936343.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/wafugutoxasudazimafadojef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/causas_del_bogotazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5863/3627/files/33871270979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/ablls_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/python_stdin_readline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/digise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/31635825965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/ncert_maths_text_book_class_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/66326969671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2330/8712/files/63648532289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/vubunime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/8566323590.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_off000048d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D3 5404 bytes
SHA-256: 3f40560e7e73d5cc43f049a7eddcaf5beff874242f686e71334f57f80fc056e1
font_01_sfnt_off00005b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B25 10392 bytes
SHA-256: 97ef711e8c7182703c5c6d604c8f12728889cf260d53c4e3e74200ce64fbacf0
font_02_sfnt_off00007eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EED 7824 bytes
SHA-256: 74a94e9087fd285c4b701040e3d5dafbd45ba3749d7b978bb5cc2586e81e1153

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