Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ff7a8fcb2117f2…

MALICIOUS

PDF

63.0 KB Created: 2020-10-21 08:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e1515e58f3384a080e4077d4a90f2bb5 SHA-1: 924876ac1ef42e16639e3f7d320ee0a79594f3a2 SHA-256: 40ff7a8fcb2117f293614f77ff592bb7e0680401a8e236123ff5aac467e38a20
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/123?keyword=manuale+d%2527uso+xiaomi+mi+band+4'. The document body, though heavily obfuscated, contains references to a user manual and the malicious URL, suggesting a social engineering tactic to trick users into clicking the link. The ML classifier also strongly flagged this PDF as malicious.

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://ttraff.me/123?keyword=manuale+d%2527uso+xiaomi+mi+band+4 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_5f8fb7dd5b5c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_5f8d3db3b6bf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5f8d719890caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f8928094ef7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f875cc0afd95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_5f8e432b21c07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5f8ce93a202ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f8880d646451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_5f8a84dee12c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f8741e3a926c.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://s3.amazonaws.com/kavitokolezub/dadugifenozegerupukonexa.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/someparepokabeseg.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/82903372731.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/950472782.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/tegurekividewito.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/blockchain_revolution_portugues_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/pixupadetalelovozu.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/wakafogedugudaduxukibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c47d6f6-9a14-43cb-8061-bac6a407c4e9/72185019831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75006f36-a399-4cf8-93da-5a93332d2e5f/57979973910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdaa81bb-7c3e-4f5e-9f26-c1e4d6c87727/fadedafidawefuxapovafexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e923fad3-73be-4ce3-8e94-c008315a7c02/42985834421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a76e9bbf-c405-41b5-8549-5e3acb2d213a/how_to_convert_dbm_to_mw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29141fcd-0827-4ebf-ae4a-9cd1623bf197/wowuragilifukixudezaxun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/864ac68a-cf99-43dc-917e-15356dc96332/juriti.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_off00009d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D16 5012 bytes
SHA-256: 9a6e1c89e2459a3611b4ec48e073a71c6164f2f14d7b593575bfa3399bcf2500
font_01_sfnt_off0000ae11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE11 16796 bytes
SHA-256: 15445a37c264ed064b63f9a52dfdfbbd3031378b9628170d9b64fdbd19180c44
font_02_sfnt_off0000e081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE081 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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