Malicious PDF — malware analysis report

Static analysis result for SHA-256 06013361d4f499f8…

MALICIOUS

PDF

46.2 KB Created: 2020-10-31 20:18:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 751ae2bcce2fc85f78dd0f482ebd6690 SHA-1: 91ace2540c80dc433bc772c530dcd30803ca9778 SHA-256: 06013361d4f499f8000c90d60e0f06acd6e51c868be635b93a3b4f203788db2d
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure and a link farm. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous links suggests an attempt to redirect users to malicious sites, potentially for phishing or malware distribution.

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://gettraff.ru/aws?keyword=before+the+throne+of+god+above+chords In PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/jafofabum.pdfIn PDF document text
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/kijises.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/wenafufixuf.pdfIn PDF document text
    • https://rajivuwos.weebly.com/uploads/1/3/4/3/134398668/8d84947fd52fb17.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/7733453.pdfIn PDF document text
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/loliwuzevi-kodudina-bisipumik.pdfIn PDF document text
    • https://lugeluwad.weebly.com/uploads/1/3/4/3/134328935/5633664.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/xezujuxoz/cartes_du_ciel_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/behavioral_genetics_knopik.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/antareja_antasena.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/application_of_computer_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/ultimate_history_of_video_games.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/harbor_freight_franchises.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/53679113883.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/gapisepabidaredanipeko.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/97669215921.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_off000051fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FE 5240 bytes
SHA-256: b6b82ac564bf2d107cd82de4f03b43b811e533a4c7444fb89a270debd6143004
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 10796 bytes
SHA-256: 7fd78b1eb825c48fc700f29ce2a90ff49b4b2f1fd4aa30645a9ba24a2a68d2b8
font_02_sfnt_off00008832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8832 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832
font_03_sfnt_off00009d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D1A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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