Malicious PDF — malware analysis report

Static analysis result for SHA-256 6603140d0611490d…

MALICIOUS

PDF

64.1 KB Created: 2020-08-22 18:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 740ace1404dbc1ba6022350dc304606a SHA-1: 342c1488ca0f3b7ba0ed51fd80206897835b7287 SHA-256: 6603140d0611490d9033103fd4e3172ca5dfb480001bcf49df6320ceba5fe027
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'categorical data analysis' and includes the malicious URL. Heuristics indicate this is an advance-fee scam and a malicious redirector, strongly suggesting the intent is to lead the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=categorical+data+analysis+alan+agresti+pdf
    • http://files.thewealthyhomeowner.ca/uploads/1/3/2/3/132303150/ledubekufotu.pdf
    • http://files.waveloopart.com/uploads/1/3/0/7/130738812/maxulegisavi_vadulinim_sumibozekataza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0446/3765/1107/files/attestation_d_hbergement_cmu_ame.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/anatomy_trains_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/83692505067.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/kakatewobarepol.pdf
    • https://cdn.shopify.com/s/files/1/0436/0493/4818/files/academy_stars_4_pupil_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9726/files/12401050567.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/ielts_listening_band_9.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/kejokimebadexol.pdf
    • https://cdn.shopify.com/s/files/1/0437/9512/0289/files/valewurixisedawig.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/lexunedukezefu.pdf
    • https://cdn.shopify.com/s/files/1/0461/3921/1929/files/surat_ayat_kursi_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/69263943555.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/didedaxumeralim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4781/2248/files/vomaribotenefus.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/26721270120.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6da.bin
d157b6c4a2a89b5e5f60de48c630c4ab24114b189b863b5e2adc74138bbf0ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6DA 5328 bytes
font_01_sfnt_off0000c916.bin
e4d12d1ea9379812c20d68b034668ccb9d22d8b8049087fe00b8b039076ea8fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC916 12900 bytes

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