Malicious PDF — malware analysis report

Static analysis result for SHA-256 989bd389f4c5d3e8…

MALICIOUS

PDF

46.8 KB Created: 2020-10-27 08:02:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 523d425386ef77d5be4e9d4e713a0a52 SHA-1: 3bbc9ae1688711e67ed0f61f2a0d95601ef32d28 SHA-256: 989bd389f4c5d3e8ca24c8f5f78cd0feb6bf80b6edf95a59ba2f18fa124351b1
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://ggtraff.ru/123?keyword=yosemite+guide+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/123?keyword=yosemite+guide+pdf In PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/zuvoxikemewo_vakafezupezuxu_pawunu_dukezumokowifam.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/3cb839f757cc7.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/7515503.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/zavofelajemu-pibelula-tiraw.pdfIn PDF document text
    • https://tagarimoruta.weebly.com/uploads/1/3/4/3/134320697/7d8d18eac814.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/2253368.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/cec7ce45e563.pdfIn PDF document text
    • https://delimilakemasuj.weebly.com/uploads/1/3/4/4/134400920/jabetulamiroge_gejuwoz_wopileg_wisepolare.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/sosial_budaya_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/difference_between_shielded_and_unshielded_twisted_pair_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/american_english_file_3_second_edition_teacher_s_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/xavuk.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/92906265493.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/dizugodepilelom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6303/1957/files/81811387885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8226/0384/files/tewazupitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3294/9148/files/american_anti_slavery_society_goals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5152/0678/files/wanaluzuxugetulegudakola.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/nekegeviwelemamojita.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/theatre_of_the_absurd_in_waiting_for_godot.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_off000070e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 4984 bytes
SHA-256: 35996159891d7b619c9cc0949bf8e3e57815ca0227f4c712dcb43bd6897e230a
font_01_sfnt_off000081cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 1796 bytes
SHA-256: 68bbe42c93759ab90c218695aa25c1747b40456063d11b0ac06b51d2514fd3e6
font_02_sfnt_off00008a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A58 10912 bytes
SHA-256: 05835b38834e49c5d35dc78924e44f6f6a23201c3851e3cf58daa835e97c3f53

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