PDF malware analysis — malicious · f03f413e5e4bbd1f

MALICIOUS

PDF

53.7 KB Created: 2020-10-24 22:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-18

MD5: 04d4e36f08562ccd64942873901126ac SHA-1: b11324ec04ca2ac97762173cd5e7722d188235e4 SHA-256: f03f413e5e4bbd1f16413b5a01313c9b460d14ed50165a1bbccde06d8004b05e

134 Risk Score

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.
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://ggtraff.ru/pify?keyword=lettering+practice+worksheets+tombow In PDF document text
- https://cdn-cms.f-static.net/uploads/4366335/normal_5f890e8a07501.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369160/normal_5f8f897d15a07.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366009/normal_5f9199fd90a45.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388163/normal_5f93f197b374e.pdfIn PDF document text
- https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/4472734.pdfIn PDF document text
- https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/zosalejaxa_namik_notubagopo.pdfIn PDF document text
- https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/dubumevesuguzo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0266/9546/7195/files/xuzapitata.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7222/5442/files/31643669142.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/4248/7458/files/school_closings_ri_turn_to_10.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6835/8807/files/42430383396.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5244/0479/files/mecklenburg_county_register_of_deeds_vital_records.pdfIn PDF document text
- https://s3.amazonaws.com/lomogas/34751830389.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd2dd32d-7000-43f1-9d2c-cf697da76a95/komenezig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a16b374f-aebb-4e65-9385-f2a31c88aec4/54952662240.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/573af704-286a-4bca-b6a8-4439f80433c6/38980797323.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d8738416-975e-4cd3-a26f-581be4346ef0/tejolewawuzosijisurumonuz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/816bee07-3771-45cc-8f04-ea16679ee379/evaluation_pass_compos_ce2.pdfIn PDF document text
- https://s3.amazonaws.com/daselex/17642490269.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/calidad_de_vida_en_mexico_2018.pdfIn PDF document text
- https://s3.amazonaws.com/tesodagiwor/microbial_ecology_textbook.pdfIn PDF document text
- https://s3.amazonaws.com/nuxulikiwab/design_trends_2019.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000066d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66D4	5340 bytes
SHA-256: `0a919550539cd5f899507096cbcf3231e3e39b8e94de72854a175f711a88663c`
`font_01_sfnt_off000078de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78DE	10696 bytes
SHA-256: `e142585e4123e071a6ab48a8c7b1a866b8022b82fff7be5cc20dc09c3ff1ca70`
`font_02_sfnt_off00009d3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D3A	18484 bytes
SHA-256: `fcbf0da1aadc0bd671c66d6e04e4bf4f043bbe5fc25aaa1765f425734084a5f0`
`font_03_sfnt_off0000bacf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBACF	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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