PDF malware analysis — malicious · 2c6be48a02b31b1a

MALICIOUS

PDF

45.8 KB Created: 2020-08-31 02:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 19064017d4690a2731bdf9d38d960771 SHA-1: 8b26f924b94c09493740a92036b48285c3e0a212 SHA-256: 2c6be48a02b31b1a706e8c6ffe931062c740ebbee46526acfad85f6c3f2fc863

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'career opportunities' and includes the malicious URL. This suggests a phishing or scam attempt where the user is enticed to click the link, leading them to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=3+career+opportunities+in+cooking
- https://static.usrfiles.com/ugd/b8c837_94f15a7589ab442185a06ff5ac978955.pdf
- https://static.usrfiles.com/ugd/0d2908_a6aedb4f5e5d4955bbd31ffd990a2a24.pdf
- https://static.usrfiles.com/ugd/ab059d_e08fb8a54259405ea6707048dc1c1c4f.pdf
- https://static.usrfiles.com/ugd/b8c837_99ad1b897190417794d4720556388221.pdf
- https://static.usrfiles.com/ugd/b8c837_6b15643489db435c8438154b46b16337.pdf
- https://static.usrfiles.com/ugd/7d21c0_d5f1878e0ada4e06a2d857f1794e6602.pdf
- https://static.usrfiles.com/ugd/58a813_139d5b516b294471a3186f55ecebdc2e.pdf
- https://static.usrfiles.com/ugd/4b7290_ca6e1d0f61bb45ccb2f551c32a73d392.pdf
- https://cdn.shopify.com/s/files/1/0433/5819/1768/files/lisajipiniwazax.pdf
- https://cdn.shopify.com/s/files/1/0429/1762/6012/files/2019_tamil_movies_in_kuttymovies.pdf
- https://cdn.shopify.com/s/files/1/0437/7142/9015/files/technical_support_engineer_interview_questions.pdf
- https://cdn.shopify.com/s/files/1/0432/4212/7527/files/sozedewobaxafep.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.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_off0000755d.bin` `af65a5e73f9c6f4c6e06fdb43b88bfc4081325358b1f356e9c62cc787daaeafb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x755D	5200 bytes
`font_01_sfnt_off00008710.bin` `5cd547b64e2c557e86e34b67e3cb87400de57353ab4036b8dad61ec278a25908`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8710	10420 bytes

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