Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bded2976516b7ef…

MALICIOUS

PDF

64.3 KB Created: 2020-08-23 12:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c13fcfb4e5e87992a4f1330b4ee6211 SHA-1: a11e318b521f9c773930458f3dac1fdbcd4019b5 SHA-256: 1bded2976516b7ef68539807e4b3a2fd07428be87d6175aadf5f5cd653c1843f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.ru/pify?keyword=achyutam+keshavam+bhajan+song+free' points to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malicious content. The document body contains garbled 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.ru/pify?keyword=achyutam+keshavam+bhajan+song+free In PDF document text
    • http://lumafawi.pefrederiksen.com/uploads/1/3/1/4/131437919/3322177.pdfIn PDF document text
    • http://bujon.dennisnealvaughn.com/uploads/1/3/1/3/131398589/saxufadinow.pdfIn PDF document text
    • http://jenapi.proofreading-course.com/uploads/1/3/0/7/130775507/naneruwusevejot.pdfIn PDF document text
    • http://files.prosplanning.com/uploads/1/3/1/3/131379506/8117171.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/73408073524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/dimubazenoninoxapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6708/8791/files/digestion_de_carbohidratos_lipidos_y_proteinas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/tujolexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3897/4628/files/27014126875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/pdf_editor_freeware_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/61570771743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/online_converter_to_word_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/make_labels_from_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/0894/2233/files/69289645824.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000de0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDE0B 5888 bytes
SHA-256: bc342be7546a77e519871300543e2db2aaa5d95b667a2b458444655539517467
font_00_sfnt_off00006a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A58 5528 bytes
SHA-256: 64aeb55c25e61e0bc355fea4f1e902e5e36c0e01b21285ad332d3c7fc28732fa
font_01_sfnt_off00007d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0E 4468 bytes
SHA-256: 8b69a766a9e8ec7f291be8e936e0c374ba30e04bd1ba52ed2f33efc004b056ad
font_02_sfnt_off00008b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B29 15084 bytes
SHA-256: af1654906c6636846d9c77be5450b539c8d918c168f4b6dcb36e1630bbb2bcef
font_03_sfnt_off0000badc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBADC 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_04_sfnt_off0000d00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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