Malicious PDF — malware analysis report

Static analysis result for SHA-256 773eee6f7de916a8…

MALICIOUS

PDF

40.7 KB Created: 2020-08-09 06:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f718f08b3c73547cc818ba105bf3480c SHA-1: 1cc177b2b87fa8e24165dd9a12b334779a428407 SHA-256: 773eee6f7de916a8861347f46c9b2be02238a9b6ec68533e2f8904ae3334d4a8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of embedded links, many pointing to what appears to be a link farm designed to host numerous PDF files. One prominent link, 'https://ttraff.com/pify?keyword=a+decima+profecia+celestina+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or to download further 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.com/pify?keyword=a+decima+profecia+celestina+pdf
    • http://files.wildcatpaintball.com/uploads/1/3/0/8/130873829/beradolutabataneli.pdf
    • http://fenupi.megat.org/uploads/1/3/1/4/131438641/28af3123b62269.pdf
    • http://files.306partyrentals.com/uploads/1/3/1/4/131454116/6019467.pdf
    • http://files.texasaphc.com/uploads/1/3/0/7/130775135/lizix_kalit_fepilexifozok_tixirip.pdf
    • http://files.theresemcinerney.com/uploads/1/3/1/1/131163613/joruluz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6640/8603/files/95453525535.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/zepinumekav.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/fidulirigopim.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/break_brick_wall_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/newit.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/58417807042.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/96678929474.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/rollercoaster_tycoon_3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/cox_tv_guide_las_vegas.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/7725333264.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_off00006112.bin
39391760fc5a1f49dae6035aa086a813d3012e837d5929e49bc74071d64bd07e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6112 5288 bytes
font_01_sfnt_off000072f8.bin
a784643ac326a6429675b576c9010c66f7b0e71ec4f5fd351173e8e94f4d4662
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 10308 bytes