Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e59b2c56c9d64a…

MALICIOUS

PDF

43.7 KB Created: 2020-08-23 14:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5e6e52988e8444c80c129cc474f25bb1 SHA-1: 67306dca9e55fb9807c0680fb0c8548ad8d529c0 SHA-256: 12e59b2c56c9d64a02a89379e8ae5b318cfaa27522799b64e7cedb2071bbb20e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text related to 'Arcane legends bot apk', suggesting a lure for potentially unwanted software or malware. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy to distribute malicious content.

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=arcane+legends+bot+apk In PDF document text
    • http://files.tailor-madefitness.com/uploads/1/3/1/6/131636612/fc2e6.pdfIn PDF document text
    • http://files.bodhi2go.com/uploads/1/3/2/3/132303043/3164344.pdfIn PDF document text
    • http://files.jessicafleck.com/uploads/1/3/2/7/132710748/zanabevad.pdfIn PDF document text
    • http://safopu.stefanomitrione.com/uploads/1/3/0/7/130738837/vatop-jexudijebudiri-vomix-xawumesek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1356/2787/files/jaragijijifenadurejivadav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0999/0043/files/affichage_alphabet_ce1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/99737352446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/what_is_the_plural_of_diagnosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/proxmox_change_host_name.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/fobotixivexogum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7659/7413/files/75619281271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/87033325661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/anlise_estatstica_de_dados_geolgicos_landim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93880590480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/kujataxalerirevinare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/23254908862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/20661700183.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_off00006a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0C 5436 bytes
SHA-256: 83f88053179b77212e7e632551c789c2052424349c1177f8a450e5592b5066b4
font_01_sfnt_off00007c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C82 11108 bytes
SHA-256: 8b2d67c737d1b056c624f3539bbf64ec049533726f401027c1541ba30504e93d

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