Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6bbc9fe5284a79…

MALICIOUS

PDF

46.3 KB Created: 2020-08-21 12:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20beede09041f15419548533b3f2ca53 SHA-1: 66db70d9146440454fff5e9ac900d38b5e2860f3 SHA-256: 1e6bbc9fe5284a79fa61c416ac9ad6ee2452c1ddef33ec2a8645bf117638c165
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a game download, which is a common social engineering tactic. The ML classifier strongly indicates maliciousness. The document body and embedded links point to a lure for potentially malicious content, likely leading to further compromise.

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.cc/pify?keyword=android+rpg+hd+games+offline
    • http://files.dancinggoatsmilksoap.com/uploads/1/3/2/6/132681409/8709835.pdf
    • http://files.topstitchpro.com/uploads/1/3/2/6/132682090/9928287.pdf
    • http://files.mudlarktheatre.com.au/uploads/1/3/1/3/131383998/vefif-vazikirepu-ruwajiwul-rebedutir.pdf
    • http://files.soxoflove.org/uploads/1/3/1/3/131384771/dukumaroma_tadezixalut.pdf
    • http://files.indconstructionforum.com/uploads/1/3/1/6/131636891/9875321.pdf
    • https://cdn.shopify.com/s/files/1/0431/0325/6737/files/uric_acid_diet_chart_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0449/5713/9103/files/gepixewolewu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0567/9528/files/assignment_abroad_times_latest.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/accrued_revenue_balance_sheet_account.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/animals_maroon_5_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3050/files/geometric_distribution_formula.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/4980545054.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/dogopukofagidoxajumur.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/army_of_two_xbox_360.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_off00007561.bin
c1707c5648f2ef467167a88e4185535dfc10e180e5e1a61d02586a2a431833ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7561 5444 bytes
font_01_sfnt_off000087b6.bin
0ea692686d207ff33da04bfd63a562bde6890e74a7c11c71a923ae3f6849ce2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 10800 bytes