PDF malware analysis — malicious · a09b8b1d975a0215

MALICIOUS

PDF

45.6 KB Created: 2020-07-09 20:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7720a15a2672d13004ca8a65209c5820 SHA-1: 3dee98424f8db69693d1300fd6b6de09f9483caa SHA-256: a09b8b1d975a0215d7c4bf05d8d3bafb4665dd10af8d52d4a89fef3ca9625704

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link to a known malicious redirector, ttraff.ru, which is disguised as a worksheet answer key. The document also hosts a large number of links to other PDF files, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the presence of the redirector and link farm strongly suggests a phishing or malware distribution 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.ru/wb?keyword=chemical%20bonding%20electronegativity%20worksheet%20answers
- http://files.summitsalesrecruiting.com/uploads/1/3/0/7/130775654/ropebosaledagipesata.pdf
- http://files.myskiped.com/uploads/1/3/1/6/131607023/wiwup_pazazenib_rununupiz.pdf
- http://files.fcwellnesscompanyltd.com/uploads/1/3/2/6/132695574/5a417ce.pdf
- http://files.photographybycj.net/uploads/1/3/1/0/131071191/688174.pdf
- http://files.womenscoalitioninternational.org/uploads/1/3/1/8/131871909/1323992.pdf
- http://files.focusedlearningsolutions.com/uploads/1/3/1/6/131636990/49d8e9.pdf
- http://files.singaporepoetryslam.com/uploads/1/3/1/8/131871467/5060274.pdf
- http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdf
- https://texiduga.files.wo
- https://keganuforuro.files.wordpress.com/2020/06/18503485519.pdf
- https://dupegon.files.wordpress.com/2020/06/12966360947.pdf
- https://zasajeloso685135112.files.wordpress.com/2020/07/89692294651.pdf
- https://texiduga.files.wordpress.com/2020/06/18153677156.pdf
- https://tanudatekaj.files.wordpress.com/2020/06/nopijudababumimelivuwo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36149341097.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikidewutuxazumal.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00007359.bin` `1b4163814be361f5fc0be6f31b1dbd4e9549881fc215079220d8403148db3779`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7359	5624 bytes
`font_01_sfnt_off0000865f.bin` `7a0046018cebb0c04d87dfb0fd68763219c65c74a69499d428db54901bf1c48c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x865F	10260 bytes

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