Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b272ef3f87805e…

MALICIOUS

PDF

46.0 KB Created: 2020-11-08 00:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e769597d7408a00ca31281d15ec27e8 SHA-1: 1d419590ec29468a7ac9d3a7616aa5e863a7693f SHA-256: 72b272ef3f87805efc9c99c6d2ea3da149e2207e22ff1298f7046e2af164a5a3
96 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a heuristic firing indicates a link farm of external PDF documents. The primary URL, 'https://trafftec.ru/aws?keyword=free+spider+man+movie+online', suggests a lure related to free movie content. The presence of numerous external links, including 'https://papilezuserif.weebly.com/uploads/1/3/4/4/134437149/0bb4640b.pdf', points towards a campaign designed to drive traffic to potentially malicious sites or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafftec.ru/aws?keyword=free+spider+man+movie+online
    • https://papilezuserif.weebly.com/uploads/1/3/4/4/134437149/0bb4640b.pdf
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/robetobube.pdf
    • https://fonamajubeb.weebly.com/uploads/1/3/4/4/134474676/bafetoxumu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8bf1f134-72e2-4987-bed6-7414d917e6d8/zer0_skill_tree_guide.pdf
    • https://uploads.strikinglycdn.com/files/4ee09349-fbac-48af-b5a3-14c48c37852a/writing_a_letter_to_judge_for_leniency.pdf
    • https://uploads.strikinglycdn.com/files/0df4600a-7079-4724-a53d-91711ba510e3/fadosax.pdf
    • https://uploads.strikinglycdn.com/files/ecc8161f-40b8-4199-9f7d-20b324e850c7/the_existence_and_attributes_of_god_audiobook.pdf
    • https://sozutamigop.files.wordpress.com/2020/11/62453205096.pdf
    • https://uploads.strikinglycdn.com/files/11d9563d-bab4-46e2-9f85-efa02f3e2676/vefogijo.pdf
    • https://s3.amazonaws.com/pazifetanegapu/kadegeziladugiwo.pdf
    • https://uploads.strikinglycdn.com/files/44334fcd-6f6e-473c-9be9-3ee1433c9aa0/jazidovixorisuxom.pdf
    • https://s3.amazonaws.com/jaxesabi/dusuv.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a94.bin
ea8d8dae144101f573b6e2eaa1b2ded10bccf4a2047f2b93860b11de29768080
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A94 5120 bytes
font_01_sfnt_off00007be7.bin
a242802d382733148c75e2768145ccadff4d0932d7457824c8ba05424d5429dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE7 1948 bytes
font_02_sfnt_off00008538.bin
da227452570d7df3467f353cd9320909d7aeb0abc0056c37898400a8040b94f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8538 10956 bytes