PDF malware analysis — malicious · a69512b1082d7bfd

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 06:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b1df36c95531e9692551307ba1221b6e SHA-1: d06c312286424a1f3148021ff677289f5255f5d0 SHA-256: a69512b1082d7bfda8263caebe685d6f7e6ebdb327ddb6efbddd2e1874108f2f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector URL (https://ttraff.cc/pify?keyword=mandatario+aduanal+pdf). This suggests the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, indicates a link farm or SEO poisoning attempt to improve search engine ranking for malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=mandatario+aduanal+pdf
- http://files.chinesemartialartsmd.com/uploads/1/3/1/0/131071243/6620346.pdf
- http://files.ksobha.com/uploads/1/3/1/4/131453214/lugukitola-legepuso-nunux.pdf
- http://files.mississippimudkennels.com/uploads/1/3/1/8/131872054/9ff3116e5e28778.pdf
- https://cdn.shopify.com/s/files/1/0432/5172/8546/files/xesubulebomi.pdf
- https://cdn.shopify.com/s/files/1/0428/5107/4214/files/bunixugugixof.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdf
- https://cdn.shopify.com/s/files/1/0430/1458/6521/files/55394092274.pdf
- https://cdn.shopify.com/s/files/1/0434/2041/8198/files/volunimonuriwu.pdf
- https://cdn.shopify.com/s/files/1/0429/4633/0791/files/dexufuruzokabikusuwaveke.pdf
- https://cdn.shopify.com/s/files/1/0441/1329/7560/files/pogewipol.pdf
- https://cdn.shopify.com/s/files/1/0431/5214/6587/files/fawumediwule.pdf
- https://cdn.shopify.com/s/files/1/0432/0159/3507/files/dubaforewivonunobo.pdf
- https://cdn.shopify.com/s/files/1/0432/6939/0500/files/rereruxazosila.pdf
- https://cdn.shopify.com/s/files/1/0438/4551/7469/files/74629671008.pdf
- https://cdn.shopify.com/s/files/1/0435/0256/7588/files/97098379232.pdf
- https://cdn.shopify.com/s/files/1/0430/0688/6051/files/literal_and_figurative_language_examples.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_off0000658d.bin` `a004f5925258eb355c47bcea345c6f5e35d12d61149092a273ffbf7c9f671d4d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x658D	4864 bytes
`font_01_sfnt_off00007635.bin` `4242b2fba3b51b511820b9255f5f264036bafce5026655f3591f4a10f834b625`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7635	11560 bytes

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