Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72c0fc6b54a0f99…

MALICIOUS

PDF

62.2 KB Created: 2020-08-22 17:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ad68adfb8b94b7a492389996dc6736b SHA-1: 5544415eb3bdc2fca1b5969ca0ce3e9fcf6e8d5a SHA-256: f72c0fc6b54a0f9932e80b5f963be85d6d8d85e0de2d451533433f7bdd497313
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=assamese+old+audio+song, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=assamese+old+audio+song In PDF document text
    • http://files.arsherbarium.com/uploads/1/3/0/8/130813364/7633226.pdfIn PDF document text
    • http://files.abeemommy.com/uploads/1/3/1/8/131856664/e29c72393.pdfIn PDF document text
    • http:///\/www.lyrics.com\/ganga-amar-ma-lyrics-bhupen-hazarika.html,video_url:,zoomit:0,premium_contentIn PDF document text
    • https://////94/16994/16994/crop_175x175_16994.jpg,albumartwork_largeIn PDF document text
    • https://///////19494/19494/crop_175x175_19494.jpg,albumartwork_large:https:///////////19494/19494/crop_175x175_19494.jpg,albumartwork_large:https:///////////////19494//19494/crop_175x175_19494.jpg,albumartwork_large:http��:https:////////////19494/19494/crop_175x175_19494.jpg,albumartwork_large:https:/a10.gaanacdn.com/images/albums/94/19494/crop_175x175_19494.jpg,parental_warning:0,isSponsored:0,isAv_ad:00����������������:��������In PDF document text
    • https://////12939/12939/crop_175x175_12939.jpg,albumartwork_large:https://In PDF document text
    • https://///12939/12939/crop_175x175_12939.jpg,albumartwork_largeIn PDF document text
    • https://///////12939//12939/crop_175x175_12939.jpg,albumartwork_largeIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/b_d_chaurasia_general_anatomy_sixth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2594/7029/files/fetal_macrosomia_rcog_guideline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/99625821860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/jedigidunarujotiwupuled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/bojiredowob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/nuvupiluxitowaruzutifikaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/jinirurirexovalisabosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/pelinozafipawevojiwibawip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/18041007183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/giwufizixuvimarovotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/nazujibizotepefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/sabugagofiwezogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/internship_application_letter_sample.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A0 4840 bytes
SHA-256: ee0c5f1b0d7c78718f3d222919df1b0709f4c8a0dd13bfccfa207033c93c08cd
font_01_sfnt_off0000b0ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0ED 14432 bytes
SHA-256: 825a0f8a6fb7fb39383aa589edc9c470c9d3fa87b78723420a1e650a85bc02e8
font_02_sfnt_off0000de03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3