Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0849b0fb974751d…

MALICIOUS

PDF

46.9 KB Created: 2020-08-20 19:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8853a332d54cf1d85e837f62f39e5ec7 SHA-1: 39908b18809a16c15de8e4587dc221c9c43542a0 SHA-256: b0849b0fb974751d41c80e11c7461617d0c5d2e3e563e29e098ef283ae356c1f
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary link points to a known malicious redirector, suggesting an attempt to lure users to malicious content. The document body itself is heavily obfuscated and contains a mix of text and what appears to be binary data, further obscuring its true purpose but reinforcing the malicious nature indicated by the heuristics.

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=abiudi+misholi+nani+atanitazama+video In PDF document text
    • http://files.alexbenarzi.com/uploads/1/3/1/4/131453592/4870172.pdfIn PDF document text
    • http://files.feathersandquills.com/uploads/1/3/1/0/131070523/vazogu.pdfIn PDF document text
    • http://jipuxem.ohanacarehomesd.com/uploads/1/3/1/8/131856772/c83f4cb0b9ab.pdfIn PDF document text
    • http://sisajixer.tylershipmanmemorialcarshow.com/uploads/1/3/2/6/132682051/rabuluxuful-wuvos.pdfIn PDF document text
    • http://files.oleksyphotos.com/uploads/1/3/1/4/131453146/9693717.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/1/0432/8102/3132/files/64805081661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/cameroon_food_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/50_examples_of_collective_nouns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8299/7148/files/solagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/the_perfect_crime_locations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/lunupemotozifidug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4744/files/savipumaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6027/1006/files/ingegneria_genetica_zanichelli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/kavus.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000504b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504B 5208 bytes
SHA-256: fb2a94245a4c3720619b5685ef4b122ce28cb696b7876bfc99e16fa35bc7c479
font_01_sfnt_off000061e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E3 15136 bytes
SHA-256: 8a37a21ac69979014e6e5f9ccc78d42dd3695c98c8d2afab4e1ac65469d4a03f
font_02_sfnt_off00009096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9096 18776 bytes
SHA-256: 9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13