Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f0a34e30b23399…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 02:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec413dcbd1e951fa1d944c9e1e808d6d SHA-1: 635c6a4b274c99c40dbc73103ecc1c6407b1874c SHA-256: 53f0a34e30b2339911abed092a6748f1d14761096eea96d8909679b11400ac67
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=bandhkam+parwana+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, many pointing to shopify.com domains. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector and link farm suggests an attempt to lure users to malicious content.

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=bandhkam+parwana+pdf
    • http://files.mndeathcollaborative.com/uploads/1/3/0/7/130739974/kakal_fufeza_regufugi_xabikesalod.pdf
    • http://files.anniepercussion.com/uploads/1/3/2/7/132740321/disatibe.pdf
    • http://luvuriba.ajameskolar.com/uploads/1/3/2/7/132740873/kusotiwexaguxifalazu.pdf
    • http://files.mainlinelawns.com/uploads/1/3/0/8/130874350/dokazibu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3001/8210/files/markdown_scale_image.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/xoraporapulijogetulanefig.pdf
    • https://cdn.shopify.com/s/files/1/0438/4358/4162/files/21st_century_teachers_tales_phonics_in_reading_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaled.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/sociology_terms_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0437/7791/7079/files/82376565113.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/add_and_subtract_fractions_with_like_denominators.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/sirijaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/marvel_future_fight_apk_data_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/adenitis_equina.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2031/files/18052502579.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c0f.bin
39a095172e87efdb1d1c20f4b64748bc367a6edbe57f11cf96a4bbc45da7b949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0F 5276 bytes
font_01_sfnt_off00006de2.bin
a18f84a9bcc76062280f07309eb883651b54f8fa62bd3de2ffd8ce5b00a830d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 10744 bytes
font_02_sfnt_off000092d5.bin
2b3891ba7bb24a0c17bc2bbbde1d40304763d7fb8b547756aab3102380204d70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92D5 2320 bytes

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