Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf02e8829dc2a805…

MALICIOUS

PDF

76.1 KB Created: 2020-10-25 06:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae88989798b5877bf80c80e739b25928 SHA-1: 7d6fdda97201771ddabb73ea784f98992bbbbdfc SHA-256: cf02e8829dc2a805b32ed197dd115490b2c1468a2d5824ba9f76d3371e59b9b1
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.me', identified as a malicious redirector. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for phishing or to download further malware. 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://ttraff.me/123?keyword=el+urbanismo+ecologico+pdf
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/munenupowubib.pdf
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/6703043.pdf
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/pajar_dorigabalasog_xetinoporaz_zekurabi.pdf
    • https://kuromazu.weebly.com/uploads/1/3/2/6/132695519/texujoko-webudutasonorok.pdf
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3794757.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0268/8158/9432/files/67359032675.pdf
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/h_p_lovecraft_stories.pdf
    • https://cdn.shopify.com/s/files/1/0492/3057/7817/files/analysis_of_nigeria_2020_budget.pdf
    • https://cdn.shopify.com/s/files/1/0478/0372/8031/files/giwasajudixela.pdf
    • https://cdn.shopify.com/s/files/1/0501/1223/3667/files/danodagex.pdf
    • https://s3.amazonaws.com/jamokaroxoj/rujufejoreraregujevina.pdf
    • https://cdn.shopify.com/s/files/1/0268/8286/7383/files/electromagnetic_induction_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0503/3295/8878/files/nba_2k20_apk_75.0_1_mod.pdf
    • https://cdn.shopify.com/s/files/1/0497/8946/8834/files/42090066801.pdf
    • https://cdn.shopify.com/s/files/1/0484/4519/4408/files/70001189752.pdf
    • https://cdn.shopify.com/s/files/1/0486/0454/5182/files/gidupasifedozif.pdf
    • https://cdn.shopify.com/s/files/1/0481/7616/9109/files/81269398695.pdf
    • https://cdn.shopify.com/s/files/1/0501/5289/8739/files/90037496853.pdf
    • https://cdn.shopify.com/s/files/1/0500/3696/5546/files/nofuzizijawujegedogakepiw.pdf
    • https://cdn.shopify.com/s/files/1/0266/8675/0916/files/tabular_method_algebra_2.pdf
    • https://cdn.shopify.com/s/files/1/0484/6128/3482/files/27625619459.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_off0000e7d7.bin
cb6798cf0b944f2b8bb82444b7fb137d6feda596cf7cc8b4df9436ffd228b4ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 5572 bytes
font_01_sfnt_off0000faae.bin
4af3435b7c05949bff3603fc4d51a296cf987c63407eae21a395e89af82aca69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAE 11708 bytes

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