PDF malware analysis — malicious · a190c3aff38b79ce

MALICIOUS

PDF

44.6 KB Created: 2020-07-31 06:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b441aa92ece36a4c23d4620990a0b834 SHA-1: 874dd39710f5448cf8e655cd5c803ffcec7a1972 SHA-256: a190c3aff38b79cea3843843ac00782a1400ad89c724ac4bd93dcc94e4e89ffb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary redirector URL, 'https://ttraff.cc/pify?keyword=nature+deficit+disorder+pdf', is flagged as malicious. The ML classifier also strongly indicates maliciousness. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or malware delivery.

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=nature+deficit+disorder+pdf
- http://files.littlenecknews.com/uploads/1/3/0/7/130738753/7878996.pdf
- http://files.mcmjanitorial.com/uploads/1/3/1/4/131406356/5b2cce2e6e7ba.pdf
- http://files.happyhousepreschool.org/uploads/1/3/0/9/130969742/8655097.pdf
- http://files.steveayottemusic.com/uploads/1/3/1/3/131380600/d50fc.pdf
- http://files.teachcruachan.com/uploads/1/3/0/9/130969190/dajitiwupetitu-newelawurejot-geniwibadiru-zonelenifuwi.pdf
- http://files.steveayottemusic.com/uploads/1/3/1/3/
- https://cdn.shopify.com/s/files/1/0430/5689/0013/files/lepilobebotonafupot.pdf
- https://cdn.shopify.com/s/files/1/0432/6309/9040/files/butilupaxolipikobe.pdf
- https://cdn.shopify.com/s/files/1/0430/7664/9124/files/jigedo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16949815227.pdf
- https://cdn.shopify.com/s/files/1/0430/4506/0762/files/53277864769.pdf
- https://cdn.shopify.com/s/files/1/0428/5438/3782/files/fesazibumutike.pdf
- https://cdn.shopify.com/s/files/1/0432/9291/7924/files/lonob.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdf
- https://cdn.shopify.com/s/files/1/0431/5119/6314/files/55334306433.pdf
- https://cdn.shopify.com/s/files/1/0437/9846/2624/files/gumigunuwadenaxawozudolal.pdf
- https://cdn.shopify.com/s/files/1/0433/4521/5656/files/26929686381.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
- https://cdn.shopify.com/s/files/1/0427/9074/8316/files/58050575401.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_off0000727c.bin` `d860d1932e6bb5c83dcc4bca4c523af98d32d731d47ae697d077ad6a1be6ab68`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x727C	4860 bytes
`font_01_sfnt_off00008319.bin` `4e9762b50966f9cc43e0a8baca87b3528d9d52bb3cc6b4bd317a3e69b2a798d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8319	9948 bytes

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