Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa3ef45782b1a67…

MALICIOUS

PDF

35.6 KB Created: 2020-09-12 10:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c11779a53e39f49cd0e56730052e8cbe SHA-1: 698d988f3d73decb7e139bfde75e570939dac665 SHA-256: faa3ef45782b1a67ed0c8153b639d7bd1ad5705fdf8c94b5ed1905a09f00422a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL that is known to host malicious content. The document body also contains the same redirector URL, suggesting an attempt to disguise it as a movie download link. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attempt.

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.club/wix?keyword=pichuva+kaththi+tamil+movie+free++tamilrockers In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/41867017572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7530/3592/files/splatoon_2_spicy_calamari_inkantation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/92637603002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/sevujukukawuwogofamunut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/blackberry_android_9_pie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/64683196259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0799/2998/files/capitec_application_form_for_learnership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/mle_of_binomial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4925/4048/files/semicolon_and_colon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8589/6609/files/1881895507.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8ab72e_091276c46a484acabf16a391b4c5c9dd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_337896b70c954961bb4fec53f7b53413.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3ed1f_440eba41a87743fba4575b4f661e1054.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4f270c_00d58e4eefbc488e9af6cc8dfed3a236.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA1 5248 bytes
SHA-256: c9d611f006d002e49ea7c759bc87b962f2c5af4c7c555c0131339b7883c7f742
font_01_sfnt_off00005d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5B 10488 bytes
SHA-256: d9fcc3a079ded2f62b8d869256075250eb1dd333807795e749089e76a9c664d5

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