PDF malware analysis — malicious · 3d5211b530bd7c98

MALICIOUS

PDF

46.3 KB Created: 2020-08-06 13:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a1a8a93f6e52dd2e2384f95ceabbcb7a SHA-1: ea5f425978db2e01da1a062ed8661e10aa71ee25 SHA-256: 3d5211b530bd7c9801e7bf1343839439c755efc47c2b6e47bbdac424d615a12a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=sinhala+e+books+free+download+pdf', which is flagged as a malicious redirector. This suggests the document is designed to trick users into clicking this link, likely to download further malicious content or lead them to a phishing page. The presence of a large number of external PDF links also indicates a link farm SEO tactic, further supporting the malicious intent.

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.com/pify?keyword=sinhala+e+books+free+download+pdf
- http://files.iniic.com/uploads/1/3/2/7/132741189/nemutopap.pdf
- http://files.spelledlikethehockeyplayer.com/uploads/1/3/1/6/131636841/tulel.pdf
- http://files.roamingbuffalo.us/uploads/1/3/1/6/131637649/4554671.pdf
- https://cdn.shopify.com/s/files/1/0432/8331/6891/files/botazuxape.pdf
- https://cdn.shopify.com/s/files/1/0431/4310/2613/files/gray_code_to_binary.pdf
- https://cdn.shopify.com/s/files/1/0441/1362/5240/files/31952031167.pdf
- https://cdn.shopify.com/s/files/1/0432/2761/1295/files/ziwivulorimukulota.pdf
- https://cdn.shopify.com/s/files/1/0435/6649/7960/files/kodi_movies_addons_2016.pdf
- https://cdn.shopify.com/s/files/1/0428/2528/5791/files/70324581748.pdf
- https://cdn.shopify.com/s/files/1/0433/8073/6151/files/kokusobakuj.pdf
- https://cdn.shopify.com/s/files/1/0431/1983/7333/files/84143592694.pdf
- https://cdn.shopify.com/s/files/1/0428/4101/4438/files/rajepenobisifigafi.pdf
- https://cdn.shopify.com/s/files/1/0434/3326/3253/files/jupoxil.pdf
- https://cdn.shopify.com/s/files/1/0427/6633/6166/files/65691454403.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/51697147186.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_off000048a7.bin` `a82aa3f9423d4f6a6343ce694566c64502ec3c2c8726ec04067dcfc17d3359b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x48A7	5528 bytes
`font_01_sfnt_off00005b34.bin` `ab7a8e86e79ac74176349034c1b3a39b513274847c06014fff4463219e6c2bc1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B34	18176 bytes
`font_02_sfnt_off00008877.bin` `99645b39741a7e25402086c9241d6984f0c9382f321d094f43beda834ce6f03f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8877	9880 bytes

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