Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f0ae9eecb90633…

MALICIOUS

PDF

43.7 KB Created: 2020-08-21 14:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a2b3fcc0de6445224b4bd3fa8df990d SHA-1: 1b21f8fe469682ecada56999bb5f5095d2f4ef59 SHA-256: 45f0ae9eecb906331668888d4ac0aa03e6d75306050ba11d8cdba5a7ddcacdaf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating an attempt to direct users to harmful content. The document body, though corrupted, contains text suggesting a lure related to 'free fitness flyer template psd' and includes the malicious URL. The primary malicious URL identified is https://ttraff.cc/pify?keyword=free+fitness+flyer+template+psd, which is likely used to redirect users to a malicious site.

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=free+fitness+flyer+template+psd
    • http://runinuza.columbiarivercooperative.com/uploads/1/3/0/7/130740537/bofopuj.pdf
    • http://files.dunedoodles.com/uploads/1/3/1/4/131408100/4821917.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/mukhyamantri_awas_yojana_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/black_and_decker_weed_eater_string.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/7244891206.pdf
    • https://cdn.shopify.com/s/files/1/0437/3171/4202/files/wiforojesemedefobuseru.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/bncc_ciencias_humanas.pdf
    • https://cdn.shopify.com/s/files/1/0465/3550/8126/files/42449113922.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/bulupakojevifepa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/wixodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/rutof.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4028/files/lefumawukobepibozufimiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/28222767310.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/assertive_communication_style.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfb.bin
626b542a86916300b5a94fe8f5f12a2e95ae35f4ae794f84f783a26d2e926c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFB 5244 bytes
font_01_sfnt_off00007ebc.bin
a0b7b567d406c80c70ec205d3d7ae27729b4a1e29b133f66fd1c8d19262225ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBC 10244 bytes