Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac627fc7c06b1a1b…

MALICIOUS

PDF

49.7 KB Created: 2020-08-11 06:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22e8d140ff24311c96de942485562e5e SHA-1: c619415153bfa511341ff66775e917c92cb2d770 SHA-256: ac627fc7c06b1a1b099df770b5f39a6941c8fb89df9768142fd20e6ffed09633
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a catalogue link. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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=ariston+electric+water+heater+catalogue+pdf
    • http://files.emilynolanviolin.com/uploads/1/3/2/6/132680986/fididixiwuzegaxan.pdf
    • http://files.prepvisionconsulting.com/uploads/1/3/1/8/131871687/lifakabodopap-rodebewulu-diwinaxawad-pixenugilaj.pdf
    • http://files.firstclassambulance.com/uploads/1/3/0/8/130874067/5676984.pdf
    • http://files.valleygraceevents.net/uploads/1/3/1/4/131482941/2429773.pdf
    • https://cdn.shopify.com/s/files/1/0434/9198/3512/files/wamatonezafivela.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/futupinoxotederoxewol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/farekitikiviwav.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2374/files/sirovofajudigeno.pdf
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/anteversion_femoral.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7033/files/88487808360.pdf
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/70760063860.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/edit_file_in_terminal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/vedazakosewugataw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/zagubozuxevuga.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/calculus_and_vectors_12_mcgraw_hill_ryerson_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/duvoluwax.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008314.bin
9707cfc7c1ca43d3d8d8f042f2046bee6bf17d70b7d853da2fb2c4bdb6883a25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8314 5496 bytes
font_01_sfnt_off000095d0.bin
8b605481f56c256816700e9f386b2508d8e38f1e99239099c49cb89ef42fa78f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D0 10616 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.