Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5cd201cfddaa1a…

MALICIOUS

PDF

68.5 KB Created: 2020-08-10 22:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4b59e66ca2fac86332f6dddfaa23b7c SHA-1: d88ab878c7951ba40ad39188b460b9f60305830d SHA-256: 6a5cd201cfddaa1a943a9e1799b934894477969ce4c8402d74aa2d872a3329ce
194 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, presenting itself as an archive of spiritual texts. It includes a link to a known malicious redirector, ttraff.com, which likely leads to a second-stage payload or phishing page. The document also contains a large number of links to other PDFs, suggesting a link farm for SEO manipulation or to distribute further malicious content.

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.com/pify?keyword=agastya+samhita+pdf+archive
    • http://files.rivalsinc.com/uploads/1/3/0/9/130970009/betovunozaniloxomesu.pdf
    • http://files.ladywarriorbasketball.net/uploads/1/3/1/4/131409861/winomuxem-mefitob.pdf
    • http://files.gailmadeitdesigns.com/uploads/1/3/1/4/131454114/fa01c9553.pdf
    • http://files.199boxingwrestling.com/uploads/1/3/1/6/131607522/givareweso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/10263328935.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/83257861734.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kigur.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/99939585954.pdf
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/ziwafivali.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/26041101021.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/contribution_of_agriculture_to_the_south_african_economy_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/answers_to_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0243/files/kixerelegumeraluvovivup.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/reservoir_induced_seismicity.pdf
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/nafamawofoxajif.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/4547075877.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/types_of_categorical_proposition.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_off0000ccf0.bin
3df0fd471145593e868d2ae911a45af70e1a022ac344bada828e1a32621b4a01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF0 5688 bytes
font_01_sfnt_off0000e030.bin
fac7beb334d4a3b350eabcc27c9ee5c141b50deac14792f0d3d6ac65b6bfddc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE030 11192 bytes

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