Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c1174edf5c9a6c…

MALICIOUS

PDF

80.2 KB Created: 2021-03-06 22:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 0591dd5f4a83f18cde2c83ec2a93b029 SHA-1: 3cb412c4b591d054c7b2d1d71b7a1c51bcb63a3a SHA-256: 14c1174edf5c9a6c1747d642ac53714cd5dc10d1495507f3e7b969c4cde962ce
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document body, though partially corrupted, contains text related to winning the lottery, and an embedded URI points to a suspicious domain. The PDF structure and embedded links suggest it's designed to redirect users to a malicious website for potential credential harvesting or scamming.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/wix?keyword=como+ganhar+na+mega+sena+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485310/normal_601ef26c65685.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366666/normal_5febb87772760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421335/normal_603743d78fb22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368977/normal_6017a3f17604d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5fe2eb3b62cfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fd119dcf0a66.pdfIn PDF document text
    • http://fokikizuxijem.iblogger.org/acr_contrast_manual_2013.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489257/normal_603265c315e70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_601c63ffbd742.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_9a2c52f88fb6478baa50dd7ccac19ffd.pdf?index=trueIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_84c9827e39534e5a96650a3598bd8375.pdf?index=trueIn PDF document text
    • https://441dbedc-201a-49d7-bb2a-292980023e2b.filesusr.com/ugd/473728_2fe0a33cca7b49aab670b1eed77b9309.pdf?index=trueIn PDF document text
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_cea8bf654ed24b83a85484af054d429e.pdf?index=trueIn PDF document text
    • http://gofosuxubajo.epizy.com/integers_word_problems_worksheets_grade_8.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_4abed5eff5eb4f83adb5373e654b13ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/lpddr4x_dram_datasheet.pdfIn PDF document text
    • http://rakejobik.epizy.com/seripa.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/21637796250.pdfIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_62f394fb9ffe4398ba9b27fc6525aafc.pdf?index=trueIn PDF document text
    • https://83d7d1d1-3661-4158-a2cc-78aa4aa39d08.filesusr.com/ugd/163759_21883c3dae104dbba3b4e6ca194da518.pdf?index=trueIn PDF document text
    • https://e8677ced-6330-435e-8237-200fb10408a4.filesusr.com/ugd/a4c1fa_cb3c57ee19b24166be40d3673f56ad14.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zabevog/diablo_2_1._14_build_guides.pdfIn PDF document text
    • https://2c91b947-1dd8-401e-ae91-d595f2f75867.filesusr.com/ugd/0af078_72c409486b744a4291bda7e90aee16f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lazolu/xotaxerufibanojurinepipu.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/42465017245.pdfIn PDF document text
    • http://bigobawavelig.epizy.com/daduboripoxamexutig.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_off0000f757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF757 5452 bytes
SHA-256: d98761cf76c7b5ed48b6aa0a693d8dcc8a203d839be2a31e5563a984364963b7
font_01_sfnt_off000109b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B2 12880 bytes
SHA-256: 0e4713863c6a690981cbe160785051cf8d0b9cf2a4d2a110d8876260afdf8891

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