Malicious PDF — malware analysis report

Static analysis result for SHA-256 62765bb61afe8713…

MALICIOUS

PDF

47.3 KB Created: 2020-08-11 00:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 136f31b221331cdd8109c949b6de27c0 SHA-1: f0084b426c2883e902a9e17ba6739e54c89c6121 SHA-256: 62765bb61afe87130cbd38190d9ac44688682fa4b8409440e4e6cc7b10a6ef34
162 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=alcohols+phenols+and+ethers+class+12+ncert+solutions+pdf`. The document body also contains this URL, suggesting an attempt to disguise malicious links as educational content. No scripts were extracted, but the presence of multiple links and the redirector indicate a phishing or malware distribution attempt.

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.cc/pify?keyword=alcohols+phenols+and+ethers+class+12+ncert+solutions+pdf
    • http://files.primetimeballoons.ca/uploads/1/3/0/9/130969885/9088492.pdf
    • http://files.londonpaservices.com/uploads/1/3/1/4/131407096/jevukijaxotozanozad.pdf
    • http://kujaf.outsideinstables.com/uploads/1/3/1/4/131482975/c6d9b70.pdf
    • http://sorivafug.morjana.net/uploads/1/3/0/9/130969656/womofalejizul-vegokefawetesej-zosiso-wozitepakizuvu.pdf
    • http://maxorup.schultzwines.com/uploads/1/3/0/9/130969042/lapewamugir.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/zarabesedagaxadikotulubu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/27903746512.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdf
    • https://cdn.shopify.com/s/files/1/0433/8722/4213/files/adding_and_subtracting_scientific_notation_guided_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1456/files/avesta_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/3758/8646/files/kenya_population_census_2020_results_by_county.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/bizhub_c227_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/ssi_open_water_diver_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/77439363850.pdf
    • https://cdn.shopify.com/s/files/1/0435/2799/5552/files/reduce_mov_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6390/files/10050445798.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6357/files/dexovireje.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_off000079a7.bin
6b0cbff20f46a54119e32ad4518c4f36e92837b33f1f09e5f26d52c998e2a368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 5416 bytes
font_01_sfnt_off00008c01.bin
8bc75beaa2b0b52c167b91b0a4819c903dce588963b9d548832bc1283b472607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C01 10596 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.