Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1e1303404464f2…

MALICIOUS

PDF

46.4 KB Created: 2020-08-08 09:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d3177acada3bc648cac0217dd9aa2d80 SHA-1: 615d7fc215688e799df321bb15d90831b474dfca SHA-256: 5f1e1303404464f2a455a549aa494ecb5b92e14cb739a8b64a3ca52f367b65c6
194 Risk Score

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=ascon+tecnologic+k38+pdf In PDF document text
    • http://files.chirocure.net/uploads/1/3/1/4/131405948/rolasuralunip.pdfIn PDF document text
    • http://vepaji.greaterdetroitoutreach.org/uploads/1/3/1/3/131380485/wasod-mevatifigetuwef-zupibubulu-xuxobe.pdfIn PDF document text
    • http://files.fatunicorncreations.com/uploads/1/3/2/7/132710783/8888203.pdfIn PDF document text
    • http://files.bassic.ca/uploads/1/3/1/1/131164016/a56f0e3.pdfIn PDF document text
    • http://files.hartfordcathedral.org/uploads/1/3/1/4/131407315/xifadaf.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/1/0452/8229/5969/files/english_dialogues_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/84628505899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/6531083310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/4070808389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/67231001845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/how_to_be_anorexic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/sejatifezagasowozifeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/dolphin_emulator_xbox_360_controller_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/bribery_in_construction_industry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/98440612793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/you_tv_player_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8210/5511/files/medurodewubeneserotox.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_off00006af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF7 5428 bytes
SHA-256: cc19f73061381c6614b9a47399113a3deb8e6f63e99013e2bdb5c9f035467656
font_01_sfnt_off00007d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D91 15132 bytes
SHA-256: 589a1286d8fd1e57e521a9503aef4e180d127c28535613ee7cdf380a27da73c8

Open this report in the interactive analyzer, or submit your own file for analysis.