PDF malware analysis — malicious · 7ccb3f84ee55bd78

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 17:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8894cdd9501d190b6e869ec42c6524af SHA-1: 228375241abf3bb269d06f6a140795604bc8adb4 SHA-256: 7ccb3f84ee55bd78127f37aa13d96b85bd69783391e50aa4f0e8d7c1b5f9b2fb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though heavily corrupted, contains text related to 'human anatomy for medical students' and includes the malicious URL, reinforcing the lure. The primary attack pattern involves tricking users into clicking a link that leads to malicious infrastructure.

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=human%20anatomy%20for%20medical%20students%20pdf
- http://files.aymank.com/uploads/1/3/1/4/131406520/vokekomeditimi_devopan_sokugo.pdf
- http://files.aseronnyj.com/uploads/1/3/1/4/131438539/45a51370cb.pdf
- http://files.marobishop.com/uploads/1/3/2/6/132696465/7648648.pdf
- https://cdn.shopify.com/s/files/1/0429/6055/2085/files/debupiv.pdf
- https://cdn.shopify.com/s/files/1/0430/2379/4337/files/zulupaneboluwomesi.pdf
- https://cdn.shopify.com/s/files/1/0433/7631/2478/files/rapetufuvadalobe.pdf
- https://cdn.shopify.com/s/files/1/0437/0651/5611/files/nudodif.pdf
- https://cdn.shopify.com/s/files/1/0437/4131/5223/files/79610261711.pdf
- https://cdn.shopify.com/s/files/1/0431/1715/0368/files/xasidavorinabekisup.pdf
- https://cdn.shopify.com/s/files/1/0428/2515/4716/files/xujadufuk.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/gapadodogorobese.pdf
- https://cdn.shopify.com/s/files/1/0437/2388/2650/files/41806780029.pdf
- https://cdn.shopify.com/s/files/1/0431/6617/1296/files/29593736068.pdf
- https://cdn.shopify.com/s/files/1/0432/6404/9318/files/exercices_article_partitif.pdf
- https://cdn.shopify.com/s/files/1/0438/8470/7992/files/zogelurifevuk.pdf
- https://cdn.shopify.com/s/files/1/0447/1973/4938/files/mm_dd_yyyy.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005a9e.bin` `5b237ec5f417e090b1abd451b62c45e483317359a5e74fcfc0e9952adede1141`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A9E	5244 bytes
`font_01_sfnt_off00006c5a.bin` `4626a7c4b2a17bc899debd6943d3d414cfa87c2afff4a9fad319e7f1c79060e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C5A	9820 bytes
`font_02_sfnt_off00008dda.bin` `ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DDA	4324 bytes

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