PDF malware analysis — malicious · f70693ef66d7127f

MALICIOUS

PDF

53.2 KB Created: 2020-08-03 21:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 00b29a10b9ddee73e6d171b2d09de87e SHA-1: ee6b81ef1bf06ed1ceb769e9d51d875e21c054f4 SHA-256: f70693ef66d7127f6726fd992846fea006852b44f0406669f7f2c5e19b5a13d0

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as book downloads, but they redirect to a malicious link farm. The primary redirector URL is https://ttraff.cc/pify?keyword=economic+and+social+issues+books+pdf, which is flagged as malicious. This suggests a phishing or scam attempt to drive traffic to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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/pify?keyword=economic+and+social+issues+books+pdf In PDF document text
- http://files.40simpleways.com/uploads/1/3/0/7/130739028/salonozama.pdfIn PDF document text
- http://files.richardbunningbooksandreviews.com/uploads/1/3/1/4/131454549/7529776.pdfIn PDF document text
- http://files.onsiteresearchandmarketing.com/uploads/1/3/2/6/132696112/9691153.pdfIn PDF document text
- http://vigiredog.parentshirts.com/uploads/1/3/0/7/130776757/3d05f27a27c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6431/0425/files/2487254200.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5460/4198/files/13995330221.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2875/0241/files/larukigalifapajune.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4160/2208/files/55084172333.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4339/6506/files/iphone_8_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4777/8469/files/12460318361.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1910/7480/files/wigojaditene.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5228/3542/files/lovonaxoxekanifomaxoni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1379/8050/files/rivaxasutuwegolikosagu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6916/1110/files/jefaketar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3074/8072/files/21443205851.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2742/2632/files/42354489165.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000067bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67BF	5368 bytes
SHA-256: `51b8fc168534b95e35431a3785f7380038466d69efe5587eb80e7c8c89cb9324`
`font_01_sfnt_off000079ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79EE	3720 bytes
SHA-256: `d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280`
`font_02_sfnt_off00008551.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8551	10664 bytes
SHA-256: `e1673daf3b4b468588f70a5882cd8c8696732e3d8ea8fbd228a94ed48690047e`
`font_03_sfnt_off0000a9f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA9F3	8996 bytes
SHA-256: `aed27d09fc36f793a667656a0e001b699d99c1279893fbe80713c67e4ae14af9`

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