Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb8cce187cd5189…

MALICIOUS

PDF

46.7 KB Created: 2020-08-02 21:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0e3a9dbcf57e4130789ed7d8f736eeb SHA-1: 39ee901f9543eb52f3ca259c96b59add57c69690 SHA-256: 6bb8cce187cd51893bc2740a84a5bd0caa0f85e9e6f5bfd10d5cf54718bd2092
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=opengl+draw+circle, which likely serves as a gateway to further malicious content. The ML classifier strongly indicates maliciousness, and the presence of many external PDF links suggests an attempt to manipulate search engine results or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=opengl+draw+circle
    • http://files.puddlesandrainbows.org/uploads/1/3/0/8/130815009/4f18d57816.pdf
    • http://files.anxiousandalive.com/uploads/1/3/0/7/130740222/662291.pdf
    • http://files.primaryschoolsminibasketballireland.com/uploads/1/3/1/4/131453799/1676179.pdf
    • http://files.tresasbridal.com/uploads/1/3/1/1/131163740/sotumabupolusedojij.pdf
    • http://files.mydigibong.com/uploads/1/3/1/8/131857038/2017757.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/kuduxifen.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/71716973283.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/58662494412.pdf
    • https://cdn.shopify.com/s/files/1/0428/7810/7811/files/45253161179.pdf
    • https://cdn.shopify.com/s/files/1/0434/6927/5286/files/zebifoberofo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/2013_honda_accord_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/arch_wifi_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdf
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/48265963593.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/6532236675.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/bojipuxosolosituzagumuneg.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/zeburoduniv.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_off00006a8e.bin
5c47e3ccd9e000157f4349124126732fc377009dc2deeef936456b782d86ba3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8E 5184 bytes
font_01_sfnt_off00007c4f.bin
3bcc34e831b361f21b2297c838ab593fb6071c464af14f478ad204661cfcb409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4F 14936 bytes

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