Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca24b35efe3ffd0…

MALICIOUS

PDF

44.2 KB Created: 2020-07-25 16:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63df8d0dd589941050d084a49d51af1c SHA-1: 73bc63efcfb91fa238eb2924b1a3304a7e77993b SHA-256: 5ca24b35efe3ffd03d30c5882f3275a8f9d30f833fc044c31bd50ef2dfc802aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links, many of which point to a link farm designed to manipulate search engine results. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead users to harmful content. The document body, though heavily obfuscated, appears to reference a manual, likely a lure.

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/wb?keyword=scantronic%209651en43%20manual
    • http://files.velaband.org/uploads/1/3/1/4/131453021/24b6e572.pdf
    • http://files.my-bijoux.nl/uploads/1/3/1/3/131381519/jetedogav.pdf
    • http://files.lizcaplen.com/uploads/1/3/1/6/131606434/7868294.pdf
    • http://files.critical-juncture.net/uploads/1/3/2/6/132680994/bebobezitar-bowuzo-bawugakizefuva.pdf
    • http://files.americanbellydance.com/uploads/1/3/0/8/130874124/fexedep_puxupekegilos_fipatafovigu_bupufagated.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/digejiper.pdf
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/38452197392.pdf
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/zodebemugigoravovoratijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7519/files/57165281744.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/wopekujekiraboviworeri.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/mesalidex.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/vogazexena.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/zadedav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/15725020645.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdf
    • https://cdn.shopify.com/s/files/1/0432/9911/1070/files/22589347719.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_off00006d37.bin
abd964fb52118c971056d21d2c1cca24493a79b03d158cfcf48a4885d50f0194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 5492 bytes
font_01_sfnt_off00007fbe.bin
c59cf2320ec2ce358234f3d9c054caa1c894ccfba62d821f484de5310f4ad2ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBE 10384 bytes

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