Malicious PDF — malware analysis report

Static analysis result for SHA-256 308e57ce2414f7cb…

MALICIOUS

PDF

47.6 KB Created: 2020-08-14 02:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3f9d3c41f10abc14fdada4629cf8511 SHA-1: 47f02ddb548dfb29894fac07e48a04fa8fa65d2e SHA-256: 308e57ce2414f7cb34ca137bbeaa2456dd7aa258205ed6f3863d188d00e95938
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a 'credit risk analysis report template'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector is likely social engineering via a malicious link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=credit+risk+analysis+report+template
    • http://fokemex.charltongolf.net/uploads/1/3/0/7/130739267/f79c17367e2d.pdf
    • http://files.4waybasics.org/uploads/1/3/1/0/131070246/vebikafizebopujuka.pdf
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdf
    • http://files.hrhgwenyfar.com/uploads/1/3/0/9/130969772/weziwikilaj_ladisetin_dotulem_vewazere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/54020729958.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/sekodidiresupunirer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/863712556.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/61809849799.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/tovimiwejowemuwasidajoxul.pdf
    • https://cdn.shopify.com/s/files/1/0450/9528/8984/files/in_memoriam_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/27743906131.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/sorudekasavugumidogatonib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4427/files/beviwosiwivore.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/gaveboduritujusevabukemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8509/3281/files/around_the_world_in_80_days_comic.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007040.bin
f5d4fcadce7129ee37182ec366eb7e4f4efeeb1ea80fdfec575d2e7a3e0826d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7040 5080 bytes
font_01_sfnt_off00008177.bin
345715a7da7648dbff88b70918f198fe6c5318751c31eb8ed2fcd49dcd418519
pdf-font-stream PDF embedded font (sfnt) at offset 0x8177 9900 bytes
font_02_sfnt_off0000a359.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xA359 4324 bytes