Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeac2075447e1f9…

MALICIOUS

PDF

51.2 KB Created: 2020-10-25 18:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d109ce96a8dca80ac3685e41b9f2413e SHA-1: 9f487fa43ff1d7feaaf81d43dd8c3a87d59e6553 SHA-256: bbeac2075447e1f98fcba199ee28ccdac8ab831482c0948fb51d92924df56902
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which, 'https://ttraff.cc/pify?keyword=manualidades+dia+de+muertos+con+material+reciclado', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a link farm or redirection tactic. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=manualidades+dia+de+muertos+con+material+reciclado In PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/4765241.pdfIn PDF document text
    • https://mezuminekafowiw.weebly.com/uploads/1/3/4/3/134346911/030f01a06b379.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/memul/11011305439.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/10452909567.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/a_level_geography_biogeography_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/9627599147.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/birthday_invitation_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/dunexej.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/lorokaramebowujinu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/past_simple_present_perfect_speaking_activity.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/jakotofu.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/petuf.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/vawanugaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/catholic_study_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/60437647103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/appium_desired_capabilities_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/zizotefowukogavalawazos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1827/2935/files/10_deep_clothing_size_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8458/8212/files/luruburileba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9707/1002/files/sabage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4339/7025/files/bhartiya_samvidhan_ki_visheshta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3357/4555/files/90189522535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2931/8808/files/henry_and_the_elephant_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3701/4171/files/rolapulanopivuvopova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4758/1363/files/goragofuruj.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_off00007902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7902 4972 bytes
SHA-256: cff89a11359c06222c5a51ce16fe4a44df0738572880234f4661baac1443f531
font_01_sfnt_off000089c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C2 11288 bytes
SHA-256: 0b708ca37514a19ee5dd92230238b7471d36028485c910b272229abce877a497
font_02_sfnt_off0000ae98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE98 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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