Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a93f655825acced…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 05:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62cc25bce6332d5f36b2bb73129a391a SHA-1: 1f6cbc21738e5ca4a5d31a5b591a3cded0a2dc88 SHA-256: 0a93f655825acced0cc60fbf07f25ef178af65a181adc18d6e31d9e8f3b7aad3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious site or download. The document body and embedded URLs suggest a lure related to song ringtones, but the primary function appears to be redirecting users to potentially harmful content. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attempt.

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/pify?keyword=anbe+sivam+songs+ringtone+free
    • http://files.dashandrizzle.com/uploads/1/3/1/4/131483371/fuzodetix.pdf
    • http://files.levinacegeotech.com/uploads/1/3/0/8/130814749/b7f50ec64.pdf
    • http://lifilu.ormondbeachdermatology.com/uploads/1/3/2/6/132682883/bfb3c459b208.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/sorting_algorithms_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/apachii_sky_hair.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/raguritajuvasisiguzovezek.pdf
    • https://cdn.shopify.com/s/files/1/0450/3791/2214/files/58759343830.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/super_smash_bros_3ds_dlc_codes_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/cfa_level_1_curriculum_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/46736922273.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/tufugujaxoxunazujuveni.pdf
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/dosis_antasida_sirup_anak.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/sojukixafumanezototir.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/98311697926.pdf
    • https://cdn.shopify.com/s/files/1/0436/4664/8473/files/exercice_corrig_fusion_absorption.pdf
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/48191924062.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052ef.bin
fea7065c4cd9012648630d5b8466eb22bfc144b83067f770bdbdaccf63bbbee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52EF 5244 bytes
font_01_sfnt_off000064b4.bin
3cdb7641076b3513cc93005be763226231abb6f96215c76d51c5f7cdeab71c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 14828 bytes

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