Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b0eaec526bdb5f…

MALICIOUS

PDF

52.8 KB Created: 2020-10-11 10:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ff68b43bbbf4b8f3bef17a307ee2e3be SHA-1: 12c5028eb9b05f5749e3b7d0692a7dcc2475c2e5 SHA-256: 68b0eaec526bdb5fd6464e13d73e64250986f38bae1344ee441a9a7334a72920
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The document body, though heavily obfuscated, contains a URL that matches this redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links pointing to external resources, many of which are hosted on Shopify. 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/pify?keyword=oracion+por+la+sangre+de+cristo In PDF document text
    • http://siven.dontworryaboutme.com/uploads/1/3/1/3/131378950/magusesewemido-gaxisuravewur-mukonurar-zoxolikuweriwa.pdfIn PDF document text
    • http://files.pbmusictuition.com/uploads/1/3/0/8/130814232/1383047.pdfIn PDF document text
    • http://pabitu.laplanteandonianfineart.com/uploads/1/3/1/4/131437693/wuzudipuwen.pdfIn PDF document text
    • http://files.ullrichsstore.com/uploads/1/3/2/7/132712185/bovukirixiju-gopurideb-robatekogukakus.pdfIn PDF document text
    • http://files.travelandfellowship.com/uploads/1/3/1/4/131410736/1165552.pdfIn 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/1/0497/1796/9057/files/racing_champions_diecast_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8783/9910/files/georgia_history_legislative_exam_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6696/0293/files/rwby_bumblebee_ship.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0812/9185/files/hot_bun_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe1aa33-b506-40f4-9e39-a21a7e11f14d/26232465553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80f29e1-af7b-4e6c-af6c-69a30304fd34/7082887181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3239/1061/files/siine_keyboard_apk_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4136/3870/files/6853728292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9212/4864/files/tatajodipoliwo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D87 5056 bytes
SHA-256: b8ce5d0ed07d8f8d726f3dd76cb1f05ac025f813107d3389a8471f8b7d7cd715
font_01_sfnt_off00007eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB8 10948 bytes
SHA-256: b7007e0c5f4090d9fffaecc2d3e2f74d1f6178b1d44827531823e2d44ef63c5c
font_02_sfnt_off0000a250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA250 16168 bytes
SHA-256: 794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8
font_03_sfnt_off0000b756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB756 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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