Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b67a016810e1c75…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 05:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 061d2e6f740f3947a4dd1b69cd264674 SHA-1: 3d9ff33be72e620650fcb634e6759930853fa183 SHA-256: 6b67a016810e1c75d48e1172e2ec829644343420f66f5e2ecc4c42c269a687c0
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is `https://ttraff.cc/pify?keyword=autobiography+format+example`. While no scripts were extracted, the heuristic firings strongly indicate a malicious intent to redirect users to harmful content, likely as part of a phishing or scam campaign.

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=autobiography+format+example
    • http://sabexebi.riveroaksveterinary.ca/uploads/1/3/2/7/132740405/585dc.pdf
    • http://files.pdjensenartist.com/uploads/1/3/1/4/131408942/c5d1741ed54ab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/aarti_sangrah_lyrics_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/lidixodoweni.pdf
    • https://cdn.shopify.com/s/files/1/0437/2050/7546/files/27302532679.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4485/files/balderson_cheese_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/3503/2737/files/28227269490.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/xipavowomubevarozuleg.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/zunezexavebokegiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/growatt_inverter_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/foduv.pdf
    • https://cdn.shopify.com/s/files/1/0439/8927/0686/files/sadaluvewum.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/84929703391.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/14211113838.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/41495412111.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e28.bin
18f4960a52d64bc83d6c304eee4b25c9ca37eec54c0f4efd5701b5568bea1fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E28 6568 bytes
font_01_sfnt_off00007e77.bin
2320b13b85abab86fbf33f7c0d6960182b5be47ee11453d7e6f40d9e67846a6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E77 5436 bytes
font_02_sfnt_off000090e2.bin
c50f6d2abe0ff7f9aeb1d7192c06ca8616f9ac4d260eb0cde1e21af34d5c6b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90E2 10120 bytes

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