Malicious PDF — malware analysis report

Static analysis result for SHA-256 053632a5e1160f6e…

MALICIOUS

PDF

57.9 KB Created: 2020-08-21 17:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0dafe90ddf84d23fecbc3921a65ee96 SHA-1: ef2aef988558ad418d9449168565d303781dc675 SHA-256: 053632a5e1160f6e320e3c7a9c1faf2b4172fff4612d3f2f7786738aebe207cd
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for an annual report, suggesting a phishing or social engineering attempt. The ML classifier also strongly flagged this PDF as malicious.

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=adani+enterprises+annual+report+2018
    • http://vebaferi.bibledoctrinehealthmovement.com/uploads/1/3/1/1/131163908/2fbdbb9a25825f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/clustering_methods_for_big_data_analytics.pdf
    • https://cdn.shopify.com/s/files/1/0447/7324/5077/files/doxesopemonug.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/duterarovovuded.pdf
    • https://cdn.shopify.com/s/files/1/0433/1634/7035/files/xonediwazik.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/peregiribokitukepowixa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/konurixu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4215/9257/files/my_best_self_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/xenoxebunoxofusa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3502/5830/files/calculus_iii_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/gtx_1070_gaming_x_overclock_guide.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_off00009782.bin
0c3aa637907a58081a8f166f0528b1309d2704bffe372a53f29f28eb0abd3c5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9782 5464 bytes
font_01_sfnt_off0000aa1e.bin
0edab8cf788785abcad52c51487372883998dc48245c56c304b73c77e4f4e3a4
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA1E 14848 bytes