PDF malware analysis — malicious · bbbab12c6813c419

MALICIOUS

PDF

60.7 KB Created: 2020-10-25 19:07:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: aaf6d37c75475a0fbb33bf5010a3a523 SHA-1: 1fa374610bf5ca6d25f6b3ccd5314074f4404617 SHA-256: bbbab12c6813c419d3070eec1023eab1141fcbcedcf33951b28e3c8cd69d86c9

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure promising a "score hero hack apk dinero infinito 2020" and embeds multiple URLs, one of which is identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the document's structure suggests it's designed to drive traffic to potentially harmful sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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.me/123?keyword=score+hero+hack+apk+dinero+infinito+2020 In PDF document text
- https://cdn-cms.f-static.net/uploads/4371495/normal_5f8ab24f26dac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372072/normal_5f8c3a8be5f03.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370768/normal_5f90a794c4513.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365620/normal_5f872dfccf226.pdfIn PDF document text
- https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/polemawab_tuzovow.pdfIn PDF document text
- https://busiwilepajij.weebly.com/uploads/1/3/4/3/134353274/gerorolodebatanad.pdfIn PDF document text
- https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/piranodo-debolagixuw-zebajebubulel.pdfIn PDF document text
- https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/9521086.pdfIn PDF document text
- https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/zufuxufujo_dojowilevelo.pdfIn PDF document text
- https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/favepin.pdfIn PDF document text
- https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/volojoxipodoxat.pdfIn PDF document text
- https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/3641721.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382772/normal_5f94922e66c20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371514/normal_5f90a77a141d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375071/normal_5f919ea9ab841.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fotojipifuzitul/31423140845.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/the_human_brain_vanderah.pdfIn PDF document text
- https://s3.amazonaws.com/jofunozuzof/livekazoj.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/aramaic_bible_in_plain_english.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18010fb8-691d-4b9b-b9cc-e190786583b6/mikigofifesugez.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/115e7026-d86a-40db-ac2e-41b4203669c7/xuxarodufivamuridorabogo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb5f814d-f1da-445d-9b79-3e0603d5e9f3/ximajunivurulazumotef.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off0000b4d9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB4D9	27360 bytes
SHA-256: `6f0e93c611e2e9a4f0d4b7b9263db73aa68155b81de4892d5ed6111c3b70f484`
`font_00_sfnt_off00007dd2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DD2	5476 bytes
SHA-256: `e47c468e8341c1aeb523bbfe8d484a15694f024acdb61eae3adf24d65dea68c4`
`font_01_sfnt_off00009060.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9060	10884 bytes
SHA-256: `f07e30413d3487daeacdd0f1d7b05ed3f2255f753753d1315181f09e6d42d062`

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