PDF malware analysis — malicious · 2688dc17d38b460c

MALICIOUS

PDF

50.3 KB Created: 2020-08-10 06:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2171e422c7869d612969dd8f8a8f4b4 SHA-1: 9e220003c805fdfcb72e233effac9df48101c532 SHA-256: 2688dc17d38b460cdb0c45aeb606a54e476becb7387a7ee9f88818494ea684a9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting an attempt at SEO manipulation or a link farm. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.cc/pify?keyword=calvin+cycle+steps+pdf`. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of numerous links and the redirector strongly suggests a malicious intent to redirect users to harmful content.

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=calvin+cycle+steps+pdf
- http://lumanu.mjmoore-moose.com/uploads/1/3/0/7/130776407/9920262.pdf
- http://files.ourlittlebarnyard.com/uploads/1/3/2/8/132815207/sebadotopixikak-dewelukifula-rogufewovubulo-kosurifite.pdf
- http://files.alpsed.org/uploads/1/3/0/7/130776003/dagivigof.pdf
- http://files.paleoplaycanmore.com/uploads/1/3/1/0/131070450/vodex.pdf
- http://files.yfeproductions.org/uploads/1/3/0/8/130815277/powelediw_xifikirewuvaro.pdf
- https://cdn.shopify.com/s/files/1/0439/2583/1835/files/wings_of_fire_in_bengali.pdf
- https://cdn.shopify.com/s/files/1/0433/1916/5086/files/xajovotibumiwisog.pdf
- https://cdn.shopify.com/s/files/1/0430/9801/3845/files/43932219381.pdf
- https://cdn.shopify.com/s/files/1/0435/0427/1524/files/sogurawameromuzorurujobuw.pdf
- https://cdn.shopify.com/s/files/1/0432/5844/5979/files/votaxozurugaravowi.pdf
- https://cdn.shopify.com/s/files/1/0438/5944/3862/files/zenimil.pdf
- https://cdn.shopify.com/s/files/1/0431/4769/0145/files/cours_automatisme_grafcet.pdf
- https://cdn.shopify.com/s/files/1/0430/0167/5939/files/46023265418.pdf
- https://cdn.shopify.com/s/files/1/0433/2696/3865/files/75592192193.pdf
- https://cdn.shopify.com/s/files/1/0431/3274/7927/files/kufowiga.pdf
- https://cdn.shopify.com/s/files/1/0440/6594/7798/files/pikorewudalevepibaxulu.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_off0000873c.bin` `fe23ef52106784adce17bc96a93ece9af3bd12ae21e3a97a03f67688a69652ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x873C	5120 bytes
`font_01_sfnt_off000098cf.bin` `762f0831f271ef7bb825b79ec4d9e17a4cf7bcf1876c75910c6da0e4386e4d92`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98CF	10528 bytes

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