Malicious PDF — malware analysis report

Static analysis result for SHA-256 64177444aee1aadd…

MALICIOUS

PDF

71.6 KB Created: 2020-08-31 14:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6019215aeb18f6324a81055c24ad2eb SHA-1: dfb10786603294accf2eb5594f7b0a24a0042ef5 SHA-256: 64177444aee1aaddf4dc57de84517b43f9c50db80ab1a5ec97c9e10fd6add6ef
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links, likely for malicious SEO purposes or to distribute payloads. The embedded URL 'https://ttraff.me/pify?keyword=animesh+thakur+song' is a primary indicator of this malicious redirection.

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.me/pify?keyword=animesh+thakur+song
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7840/8609/files/ideas_para_navidad_2019_manualidades.pdf
    • https://cdn.shopify.com/s/files/1/0432/2230/2888/files/pejesigidirezodapikilatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/jojiferuvoniledud.pdf
    • https://cdn.shopify.com/s/files/1/0441/2188/2776/files/40608117555.pdf
    • https://static.usrfiles.com/ugd/45fd81_9bcf6c6b895648d9a5c0cda1cc02fd9a.pdf
    • https://static.usrfiles.com/ugd/6df952_0a791385f16e4d788b94abb2f849eb75.pdf
    • https://static.usrfiles.com/ugd/b8c837_7df349b8dad545d58ed9b50e11a55cc5.pdf
    • https://static.usrfiles.com/ugd/b8c837_755a425186c147e590f737f9fd439564.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_ed0747f1bb4e4067b50e9b14a21ac954.pdf
    • https://static.usrfiles.com/ugd/ae15ca_1f5624cea27749ef8281dcff0e37bccb.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/repojutiwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8910/7869/files/rudijifilitusovup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/xujuwifunozudutuga.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/deredidisalidijuri.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_off0000cf04.bin
57dea00cb03ee06514d48f97052415112d6e6c3c0b83989abccba0e8f4f0a14b
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF04 5120 bytes
font_01_sfnt_off0000e043.bin
d6e87ecd555a19b2f2b13a06b40b0ea1685fb69e7fd478cd699b20e10a4148fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE043 15272 bytes