Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b5010a9c1f0ebfd…

MALICIOUS

PDF

53.7 KB Created: 2020-08-25 07:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aea170bd26297efd0fa5325ab35ded30 SHA-1: 76aaea00a450b80eff7f3ec7ae3f64f3f0466a8c SHA-256: 0b5010a9c1f0ebfd28d9ae3c875a3a0819d20cc91f62495a006ce77028241713
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=information+technology+meaning+in+french, which is flagged as malicious. This suggests the document is part of a phishing or SEO poisoning campaign to drive traffic to malicious sites.

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.com/pify?keyword=information+technology+meaning+in+french
    • http://setezi.viktoraskubaitis.com/uploads/1/3/0/9/130969592/vuzizisalidif_nurasoza_zowigites_zelafexuxonizi.pdf
    • http://files.revolutionaryscience.org/uploads/1/3/2/6/132681448/venumiziver.pdf
    • http://nevujisi.movingintune.com/uploads/1/3/0/9/130969724/7c4e4f5c4b6c14.pdf
    • http://files.touchofheavenranch.com/uploads/1/3/0/9/130969548/tavejug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/waste_management_plan_template_northern_beaches_council.pdf
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/nationwide_first_time_buyer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/8682884319.pdf
    • https://cdn.shopify.com/s/files/1/0440/0149/3142/files/algebra_1_exponents_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4469/files/artificial_intelligence_4th_industrial_revolution.pdf
    • https://cdn.shopify.com/s/files/1/0429/2460/5599/files/nabucco_libretto.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/byomkesh_bakshi_stories.pdf
    • https://cdn.shopify.com/s/files/1/0465/0221/5838/files/basic_english_vocabulary_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/new_catholic_encyclopedia_vol_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2560/files/26843110650.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_off000087cf.bin
ab3c286a174ec10d4a53e997c8fd7b8b9d929dd8a3928dea3021169c914cd45b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87CF 4944 bytes
font_01_sfnt_off0000986c.bin
c0c46dea372efe3f865886804b50860936cee718dd7e9d363c009d5724a3e3cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x986C 10376 bytes
font_02_sfnt_off0000bbdc.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDC 4324 bytes

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