Malicious PDF — malware analysis report

Static analysis result for SHA-256 046e905772b0336b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-17 13:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b76754b573e3ff406dc8e7bcf39b1885 SHA-1: aa9d9429eb501ab4f99f94edba61aa130ec24589 SHA-256: 046e905772b0336b3d6e2674997c36ddf46afec54dc5e81450ad9295c2304048
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests a phishing or scam attempt designed to drive traffic to malicious sites.

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=game+pokemon+let%2527+s+go+pikachu+pc
    • http://files.thegarbagefire.club/uploads/1/3/1/3/131398605/5487972.pdf
    • http://bovir.moneymentorph.com/uploads/1/3/0/7/130775726/kokarifapoxosi_puwalubis_zifuze_gixizotuneboge.pdf
    • http://files.cahootsads.com/uploads/1/3/2/6/132695805/zubujo.pdf
    • http://semiziniv.niagarakettlebellsportopen.com/uploads/1/3/2/7/132710779/bakumumil.pdf
    • http://firosi.graceandblessing.net/uploads/1/3/1/4/131438188/7077810.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/42638794243.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/lajub.pdf
    • https://cdn.shopify.com/s/files/1/0434/7196/2265/files/lubaxebadev.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/logetadukorojofir.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/70556389968.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/pefaso.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8375/files/international_accounting_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0449/5346/9083/files/civil_war_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/17221018757.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/74578740966.pdf
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/55923649358.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_off000065d2.bin
10c16ad825f41f9fd779679d7d7d8be9f3d403381a55fb5d443b7457e5050760
pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 5380 bytes
font_01_sfnt_off0000780f.bin
3c2fa0685ec8b411ac2e25d9c976cc80977d62bebcd7018cad65540ca449abc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x780F 10632 bytes