PDF malware analysis — malicious · f083637aab3f463c

MALICIOUS

PDF

43.4 KB Created: 2020-10-25 06:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: d34301804c3c29418fd80f8cc5e392a3 SHA-1: cb56a4ecb6dd37df5538b42aeb3dfda5b8562be9 SHA-256: f083637aab3f463c772c1ad3bb1de6bea867598c49c9c2fac3a272bcb84d9b79

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one identified as a redirector to malicious infrastructure. The document body, though partially corrupted, contains text related to 'Lego batman apk' and a URL, suggesting a lure for potentially unwanted software or phishing. The ML classifier also strongly indicated maliciousness.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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.com/123?keyword=lego+batman+apk+android+oyun+club In PDF document text
- https://cdn-cms.f-static.net/uploads/4384655/normal_5f8e4bbff0cae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368768/normal_5f8ce61d3162d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375699/normal_5f94b27fa07c8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371267/normal_5f89226509c3c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368767/normal_5f8baf82ba095.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/33bfe522-a060-42d8-bcd9-81ef99074010/charlie_et_la_chocolaterie_roald_dahl.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fa853937-1a2a-4a70-a6c7-d9c001d8af72/cobian_backup_review.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d9ace49-e64f-4864-9873-21f18f02aad9/dedegusejitoxezilamogegof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b853284-5072-4c84-8199-1b6bca0304cd/libros_de_introduccion_al_estudio_del_derecho.pdfIn PDF document text
- https://s3.amazonaws.com/xabalaru/b_r_ambedkar_books_hindi.pdfIn PDF document text
- https://s3.amazonaws.com/waxapoz/bsc_nursing_college_in_west_bengal.pdfIn PDF document text
- https://s3.amazonaws.com/miwolezedubujoz/93464879704.pdfIn PDF document text
- https://s3.amazonaws.com/samopakamefap/40393814627.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/4387/9594/files/33070709853.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/7887/6829/files/pumone.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/5249/7576/files/voxufufunoxexezejizazeg.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6bb7eeda-48e0-4a62-b85f-4668a858009a/the_3_little_pigs_story_short.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b87c2de5-3326-4bc3-9378-134cdf1b6aa6/fulobelobusefu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0ea9176-7f1e-4c1e-8931-b4e03c4180b1/66891651452.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/5916/2521/files/dish_tv_remote_app_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7320/0827/files/81639799323.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6886/6214/files/international_diabetes_federation_congress_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9236/8796/files/wimuvavedoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/8629/0335/files/all_resistor_values.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006a01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A01	5460 bytes
SHA-256: `2674e89e56d4025c68b5672155632839dea6e585bc40b5958632f10f7dd957f0`
`font_01_sfnt_off00007c8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C8D	10336 bytes
SHA-256: `eb1316759346a1bdc42176f5b88b79542f092cc8a4b9852d3d12e418ef9e8047`

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