Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ac17e3f2c306d3…

MALICIOUS

PDF

64.0 KB Created: 2020-10-27 19:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bbcc1701f23004b055a783470f688bef SHA-1: d5d80b8ec20cd9278929299c30b5a68e4f7ec20b SHA-256: 49ac17e3f2c306d3203f1f7612c4042a0e273fd7c5194ccc0bf2034214e1e5dc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?keyword=hana+yori+dango+episode+12+english+sub In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mipeboro/64694482675.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/abbyy_transformer_3._0_full.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/63523765380.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/petroleum_ether_msds.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/bizuvatixamosajadejuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/39668703468.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/losobotolemixalilesuge.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/ibps_po_2019_download.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/thomas_calculus_10th_edition_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/ponatifiwomupi.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/23664332687.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/2018_calendar_with_holidays_india.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/zelda_botw_shrine_map.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/96233826417.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/annual_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/ambivalent_attachment_style.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/megoliwipipamesimipo.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/english_book_b1_level.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/74892492716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/nozejidevezesam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0894/9909/files/betty_boop_dog_collar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0243/7029/files/27474568554.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 24852 bytes
SHA-256: 6a08314db10ea41760e6379a04c39b453d6321ad51f40d14e1c85759336539fa
font_01_sfnt_off0000b724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB724 5608 bytes
SHA-256: 95c3e2afd1a70a02da4f481fe21337167a67be178ec4862d4b307fc5b673df83
font_02_sfnt_off0000ca2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2B 11432 bytes
SHA-256: c30966459718cfcf811936de3a12b373ee683f4f9863cea0a240cab72f2f904d

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