Malicious PDF — malware analysis report

Static analysis result for SHA-256 37bdb0405c432620…

MALICIOUS

PDF

43.8 KB Created: 2020-09-05 20:06:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2a150c09bcfb9ff1d3da48047822adf3 SHA-1: 1c70517783efe03cb5be366ab9dfd1b58000c52d SHA-256: 37bdb0405c4326203cc15dd2add807cc8ceb9ceece427bcb4536d7909c712578
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for delivering malicious payloads or phishing pages. The document body, though heavily obfuscated, contains text suggesting a lure related to '3d shooting games for pc free'. The presence of numerous external links, many pointing to benign Shopify PDFs, suggests a link farm or SEO poisoning attempt to increase visibility of the malicious redirector.

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.link/pify?keyword=3d+shooting+games+for+pc+free 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/1/0434/4292/9821/files/benim_hocam_corafya_bayram_meral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/star_wars_main_theme_flute_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/59172013493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/fancy_text_pro.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/362633_b670ae43c1b643fa9d1dd087bc9edf93.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/808d8c_087b08e748c74ae5a4817da0343a5b8a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1c90dc_f240cd056d7a4b37b5bfc66a8926f4e5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/63d3ad_ef1cfcbdd84d4c73bb213b0ba18dfe16.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/286fb8_8639bb906910434abf5a72fc7977b3fb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0261/7252/files/fundamentals_of_astrodynamics_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/wizutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/juzalusoposasazomogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/84497372382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/27852854439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/nioh_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3052/7382/files/xujirapukitejetojutan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8449/6550/files/vidaparulezaregarod.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_off00006baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAA 5608 bytes
SHA-256: 1b61590d5045fb6bdc513792c199daa8e6cc462679a465130774e5e6dde518a2
font_01_sfnt_off00007e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8E 10244 bytes
SHA-256: e9b516aaa40db79c1920897c765f07e6ab36202b65be184f87dc37c17bde7c4f

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