Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f03068808e65cb9…

MALICIOUS

PDF

61.8 KB Created: 2020-08-09 22:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 038ea539cb97a10abae407f2b0fa5240 SHA-1: 0f38da3a3476a9b14b68f63601554018afe5fdb1 SHA-256: 0f03068808e65cb9f8452425eac0b6a120d1e4af4087376f2a482106e171efb5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious URL is https://ttraff.ru/pify?keyword=inside+al+qaeda+and+the+taliban+pdf+download, which is likely used to funnel victims to further malicious content or phishing pages. The document body itself is heavily obfuscated and contains this malicious URL.

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.ru/pify?keyword=inside+al+qaeda+and+the+taliban+pdf+download
    • http://ruloto.samuelfamilylaw.co.uk/uploads/1/3/0/8/130814328/vokodero_josapa.pdf
    • http://xerafoj.dorsetlupus.com/uploads/1/3/1/4/131453060/641044f549749e.pdf
    • http://files.percpayments.com/uploads/1/3/0/7/130775833/ac13c53b51cd38b.pdf
    • http://files.conteanalytics.com/uploads/1/3/2/6/132695832/pasuva_mevir_xejekev_wogiboxin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/3777157995.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/92266567603.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/statistical_data_mining_using_sas_applications_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0441/1890/0888/files/edit_text_in_mac_preview.pdf
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/xemuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/98221454913.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/kafimemajufulujotiven.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/22371493781.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/hinrio_caboclo_guerreiro.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/93161120570.pdf
    • https://cdn.shopify.com/s/files/1/0434/4758/2870/files/physics_matters_textbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/vuwawurefamorazokodubimij.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_off0000a51f.bin
5fffd100eee2412451532583b5a570e2aafeffe7a568f9b9cb62312c7d8b9a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA51F 5116 bytes
font_01_sfnt_off0000b67a.bin
17ce1aeb0d554e91c3001cd91dbe1de8308fc94085754c9ec3cb4698162bce48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB67A 11016 bytes
font_02_sfnt_off0000db95.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB95 4324 bytes

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