Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacc1ac07eda9948…

MALICIOUS

PDF

43.7 KB Created: 2020-10-29 01:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c0a98cdd60a6996ea2ecc79c1e1cc46f SHA-1: 9120338bd89c0723f0b031d43539b017ac473e4c SHA-256: eacc1ac07eda9948fd2b266428d04dc24856d6456056cd62821c6beb9c9e0296
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to drive traffic to a potentially harmful site. 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://ggtraff.ru/123?keyword=find+duplicate+cells+in+google+sheets In PDF document text
    • https://jojawetoterul.weebly.com/uploads/1/3/4/4/134404105/sivuzafuxazusago.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f9cb8b8-266d-42de-8dca-288ed50e127d/rinoxujelulukagufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5004/5092/files/calendario_2020_con_feriados_argentina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8452/8829/files/tetanus_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1109/9800/files/jenarakajirer.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/jurnal_penelitian_akuntansi_manajemen.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/teresixonibinimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cdfcb5b-9609-49aa-8556-981cca865642/arbonne_5_in_1_massage_oil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a943c6-9703-454c-929e-f27ec0f899d6/jupuserezusedejaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7940/9568/files/lukawiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34881a4a-1aab-4fa3-9bae-b89ac1710be2/zuteguguzalabodujudekisak.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/access_point_configuration.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/aquila_rift_short_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3915/9958/files/22721489969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6128/3482/files/17947806170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6450/6540/files/clash_of_clans_apkpure_new_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7225743d-68a5-48db-bcae-42dad3b2cf20/seredubituxilokiwogip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9505578-5385-4413-a3cd-e502b24b2687/70692364345.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_off00006a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2C 5196 bytes
SHA-256: 7902ec2d0da4ec991c708695e9488f45055b02bebe9572847acbcf7426132d23
font_01_sfnt_off00007bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD8 11108 bytes
SHA-256: b35532642edae39c7ef0e5b866b1255b637817eb0fed2399c5acff81c49af82c

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