Malicious PDF — malware analysis report

Static analysis result for SHA-256 789b9e8c89d5b154…

MALICIOUS

PDF

46.2 KB Created: 2020-10-30 10:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 241ed8bdcf7e8fb0d7423499f9c2a458 SHA-1: c2cfe411666eea28fddaecd431d7a93fbf1ba6a8 SHA-256: 789b9e8c89d5b154f2ce471a124666efcaf8ceede8f38118a75385cbfe27b448
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL points to 'ggtraff.ru', which is associated with malicious activity. While the document body contains garbled text and some benign-looking URLs, the primary threat appears to be the redirector link, likely used to deliver a malicious payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=urolithiasis%20pregnancy%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f882ad2e89f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f87335bde8e6.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/1/0505/1704/9516/files/i_hate_you_dont_leave_me_book_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/094fb46f-e30b-4f57-80d4-374e83faf11d/glass_jar_terrarium.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4689/4240/files/hola_launcher_apk_uptodown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/tariwi.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/vata_kapha_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1315/0101/files/ariana_grande_one_last_time_lyrics_video_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/51020931435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa92e86f-325a-43f0-ab47-6657825d1a2a/zetilaxupok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6278/7748/files/manual_amir_gastroenterologia.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_off00006929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6929 5296 bytes
SHA-256: 6145b282b8338f4770c4fba6265fda745335149301fffaa4cdf9093b4b341854
font_01_sfnt_off00007b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B26 10228 bytes
SHA-256: 57d9c771c69f0661d3b1f66b9008710ccc5893ab01d68c9c8cda7865b1b56feb
font_02_sfnt_off00009e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E40 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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