Malicious PDF — malware analysis report

Static analysis result for SHA-256 f23dd2f0f8a8f1c4…

MALICIOUS

PDF

51.0 KB Created: 2020-08-09 17:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9148bfb34eda8d0a1c3a14b976510b39 SHA-1: 5346a4208323fd3de0130778fe8bca58e6a463d5 SHA-256: f23dd2f0f8a8f1c491e2fae0f19b42bc22b032ed79197fa0b7672ece62b25a74
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'anxiety signs and symptoms', and the malicious URL is also present within the document body. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating a phishing or social engineering attempt.

Heuristics 3

  • 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.
  • 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=anxiety+signs+and+symptoms+pdf
    • http://nigav.rbmt.org/uploads/1/3/0/9/130969723/pevapibuzi_nelezet.pdf
    • http://files.vidiopolis.com/uploads/1/3/0/7/130740462/2799379.pdf
    • http://files.livinggospelmonroe.com/uploads/1/3/1/0/131070476/7472857.pdf
    • http://files.kathyfitzellestainedglass.com/uploads/1/3/0/8/130874683/tivobudusepadarol.pdf
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/50_examples_of_collective_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/accords_guitare_jazz_manouche.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/jabufoteluvafatorubuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/79363196274.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/87385815731.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/business_plan_samples_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/south_bend_heavy_10.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/wobavewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/60719883072.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/jekim.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://cdn.shopify.com/s/files/1/0428/0428/1511/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c2e.bin
e3830def0d3509c62c5f0bb7ab580366d10b7e97ab79635356ca4169dc728ee0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2E 5180 bytes
font_01_sfnt_off00008dcc.bin
9a347f1839d7dc34595d114bb5a9491074811efce21aa65d3820c849de1d5446
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCC 10208 bytes
font_02_sfnt_off0000b099.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB099 4324 bytes