Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a22a29afb340993…

MALICIOUS

PDF

46.0 KB Created: 2020-10-24 21:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b13f966e98f92fd753c02ba93b5a30a0 SHA-1: 3dfbeefc6941ad28121544cb34f1f8a7bb9e79b8 SHA-256: 7a22a29afb340993a60cc4510126eeb06cb5fc671a850b91a2cb49aea4df9042
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, with numerous links pointing to external PDF files hosted on platforms like Weebly. The document body contains obfuscated text and a URL that appears to be part of the lure, suggesting an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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://ttraff.com/123?keyword=ph%25E1%25BA%25A7n+m%25E1%25BB%2581m+g%25E1%25BB%2599p+nhi%25E1%25BB%2581u+file+pdf In PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/zidiwupigudodo-nolol-jijulunakuki-xozutukap.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/pewaduvawafora-xubuxofibazunap-rofaras-biwaw.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/97103f78e4d.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/e672fbfe327f3.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/5080522.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/22e187f3f1f.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/segirajakevosi.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/2739071.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/1/0499/2463/6823/files/13625465080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9609/5397/files/twrp_recovery_mode_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/tca_handbook_for_ceramic_tile_installation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8030/9666/files/10301739719.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/fetal_development_chart_month_by_month.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/adobe_reader_portable_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/48654714417.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/10th_class_english_book_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/kiwifibewex.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/12949638479.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/xiwetenened.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/autoregressive_model.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/cask_of_amontillado_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/93713104087.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/bsc_computer_science_1st_year_syllabus_2017.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_off0000658e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 5252 bytes
SHA-256: d0c815121e36b9686ad38cfc239dbbbd2c683001a3ebba2e8f30970cda0a48ce
font_01_sfnt_off000076db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 10440 bytes
SHA-256: a8790b94408ada1e8395a6671fdbe787bb236daebc3208a65614422285e90b8f
font_02_sfnt_off00009a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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